Optimized auxiliary tooling equipment for cutting notches along the end of an automobile intake pipe

Abstract

An optimized auxiliary tooling device for cutting notches along the end of an automobile intake pipe, a middle fixed mold table (3) is fixed on a workbench (2), and a tooling clamp is installed on the mold table (3); a cylinder is installed on the workbench (2) outside the mold table (3) through a support, the front end of the cylinder is connected with a punch through a piston, and the front end of the punch extends to the tooling clamp (4); the tooling clamp (4) comprises a cylindrical pipe opening support mold core (41) vertically installed at the center of the mold table (3) and the tooling clamp (4). The positioning punch opening is accurate and fast, the intake pipe is convenient to assemble and disassemble, and the mold can be quickly replaced, the production efficiency and machining precision are improved, and the high-quality production demand under the existing technical condition is met. It avoids excessive impact of the punch, improves the machining accuracy, prolongs the service life of the punch, and reduces the processing cost.

Description

Technical Field

[0001] This utility model belongs to the field of forming perforation technology using pressure cutting method under IPC classification B21D28 / 00, and particularly relates to a structural improvement technology of auxiliary tooling equipment for punching notches at the end of automobile intake pipes, which is applicable to the pipeline component assembly industry of automobile manufacturing. Background Technology

[0002] The tooling equipment for punching notches along the end of the automotive intake pipe is a key process equipment in the manufacturing of automotive parts, and its performance directly affects the assembly accuracy and sealing performance of the engine intake system.

[0003] Patent application 201721733983.5 discloses a novel punching machine, including a support, a cylinder, and a mold. The mold includes an outer mold and an inner mold. The outer mold is mounted on a mold fixing plate, and the inner mold is embedded in the outer mold. The inner mold moves up and down within the outer mold via a cylinder mounted on the mold fixing plate. The mold fixing plate is mounted on the support via a slide rail. The inner mold has a rectangular through hole, and a mold core is placed within the rectangular through hole. One end of the mold core extends outward to the outside of the inner mold. There are at least two mold cores. The outer mold has a groove corresponding to the mold core that protrudes from the inner mold. The support is equipped with a moving cylinder that moves the mold fixing plate on the slide rail. The pipe is fitted onto the mold core, and the movement of the mold core is driven by the inner mold to punch the pipe, achieving a punching method where the pipe remains stationary while the mold moves.

[0004] In addition, a precision punching tool (ZL202510123456.7) with force feedback and a stamping control system (ZL202510234567.8) along the end of the intake pipe are also the latest improved technologies disclosed.

[0005] This utility model addresses the existing problems of the above-described prior art, which mainly focus on: weak adaptability of the end face of the pipe end punching tool, low punching accuracy, and low punching processing efficiency. Manual positioning suffers from poor consistency, with notch position errors often exceeding ±0.5mm; the punch life is short, requiring re-grinding after processing 500-800 pieces; processing accuracy is poor, with numerous burrs that require subsequent manual grinding for removal, resulting in low efficiency. The operation is cumbersome, impacting work efficiency. Utility Model Content

[0006] To address the aforementioned problems, this invention designs an optimized auxiliary tooling device for punching notches along the end of automotive air intake pipes, aiming to improve production efficiency and processing accuracy, and meet the high-quality production needs under the current technological conditions.

[0007] Therefore, this utility model provides an optimized auxiliary tooling device for punching notches along the end of automotive air intake pipes, comprising: a worktable, a mold table, a tooling fixture, a punch, a bracket, and a cylinder. The mold table is fixed in the center of the worktable, and the tooling fixture is mounted on the mold table. The cylinder is mounted horizontally on the worktable outside the mold table via a bracket, and the front end of the cylinder is connected to the punch via a piston. The front end of the punch extends towards the tooling fixture. The tooling fixture includes a cylindrical pipe end support mold core vertically mounted on the mold table and at the center of the tooling fixture.

[0008] A square or circular mold base is placed in the center of the workbench.

[0009] The worktable is fixed with a first bracket, a second bracket, a third bracket, and a fourth bracket at the center of its four sides. A first cylinder, a second cylinder, a third cylinder, and a fourth cylinder are respectively mounted on the first bracket, the second bracket, the third bracket, and the fourth cylinder. The piston front ends of the first cylinder, the second cylinder, the third cylinder, and the fourth cylinder are respectively connected to the first punch, the second punch, the third punch, and the fourth punch. The feed direction of the first punch, the second punch, the third punch, and the fourth punch is towards the center of the mold table and the tooling fixture.

[0010] Furthermore, to achieve the above objectives, this utility model is configured as follows:

[0011] In particular, the piston front ends of the first cylinder, the second cylinder, the third cylinder and the fourth cylinder are respectively connected to the first punch, the second punch, the third punch and the fourth punch via the first connector, the second connector, the third connector and the fourth connector.

[0012] In particular, the outer wall of the tube support mold core has a punched blind groove.

[0013] In particular, a guide mold is installed on the mold platform between the first cylinder, the second cylinder, the third cylinder, and the fourth cylinder and the pipe support mold core, i.e., around the pipe support mold core; a guide groove is vertically opened in the middle of the guide mold, and the front sections of the first punch, the second punch, the third punch, and the fourth punch pass through the guide groove.

[0014] In particular, the first, second, third, and fourth connectors have T-shaped slots A extending inwards from their middle sections, and the rear ends of the first, second, third, and fourth punches are respectively engaged in T-shaped slots A. Correspondingly, the guide mold is inserted into the mold table.

[0015] In particular, a product orientation positioning block is installed on the mold table next to the tube support mold core, and a positioning groove is opened on the upper inner side of the orientation positioning block.

[0016] In particular, feed limit blocks B are slidably installed on the front sections of the first, second, third, and fourth punches outside the guide formwork.

[0017] In particular, an outer clamping block for the pipe opening is installed inside the guide support by means of a compression spring. The outer clamping block has a guide groove in the middle of its vertical direction that corresponds to the guide support. In particular, a vibration damping pad is provided on the end face of the inner wall of the outer clamping block for the pipe opening.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] Precise and quick positioning punching facilitates easy loading and unloading of air inlets and rapid mold changes, improving production efficiency and machining accuracy to meet the high-quality production demands under current technological conditions. It ensures workpiece stability, preventing excessive impact from the punch that could lead to machining inaccuracies and protecting components from damage. The cylinder drives the punch, precisely targeting the product to punch out the predetermined notch, completing critical machining steps. Improved punching accuracy increases production efficiency, shortens changeover and single-piece machining times, and allows for convenient manual loading and unloading, enabling continuous production. It also reduces machining costs and extends punch life. Attached Figure Description

[0020] The following figures are illustrative and should not be construed as limiting the scope of this invention. Referring to the figures helps the reader understand the embodiments of this invention and further appreciate its advantages and technical features.

[0021] Figure 1 This is a three-dimensional structural diagram of an automobile air intake pipe with a notch punched along the end of the central tube, as per this utility model.

[0022] Figure 2 for Figure 1 A schematic diagram showing the structural positional relationship between the punch end of the central tube, the notch M, and the direction marker block P.

[0023] Figure 3 This is a schematic diagram of the working state structure of the auxiliary tooling equipment in Example 1.

[0024] Figure 4 This is a schematic diagram showing the air inlet direction marker block P being blocked by the product direction positioning block in Example 1.

[0025] Figure 5 This is an enlarged schematic diagram of a portion of the tooling fixture 4 in Example 1.

[0026] Figure 6 for Figure 4 Enlarged schematic diagram of a local structure.

[0027] The reference numerals in the figures include:

[0028] 1. Inlet pipe; 2. Workbench; 3. Mold table; 4. Tooling fixture; 5. First punch; 6. First connector; 7. First support; 8. First cylinder; 9. Second punch; 10. Second connector; 11. Second support; 12. Second cylinder; 13. Third punch; 14. Third connector; 15. Third support; 16. Third cylinder; 17. Fourth punch; 18. Fourth connector; 19. Fourth support; 20. Fourth cylinder; 41. Pipe support mold core; 42. Product direction positioning block; 43. Guide mold support; 44. Pipe external clamping block; 4101. Punch blind groove; A. Changing slot; B. Feed limit block; L. Product mold parting line; M. End edge notch; P. Direction marking block. Detailed Implementation

[0029] It should be noted that:

[0030] In the description of this utility model, unless otherwise expressly specified and limited, the terms "comprising" and "having," and any variations thereof, are intended to cover other possible options under the same logic not listed. For example, a process, method, system, product, or device comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or device. The terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the utility model product is in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the utility model. Furthermore, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. Furthermore, terms such as "horizontal," "vertical," and "suspended" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. The terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components.

[0031] Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. In case of any conflict, the definitions in this specification shall prevail.

[0032] As attached Figure 1As shown, the two ends of the intake pipe 1 are along the slotted hole, i.e., the end notch M.

[0033] The intake pipe 1 is made of plastic materials, including: PA6 / PA66 modified nylon, 30%-35% glass fiber reinforced nylon / glass fiber (GF) composite material, polyphthalamide (PPA), phenolic resin, nylon / SPS blend and PC / ABS composite material.

[0034] This research reveals that current technical challenges primarily lie in the notching process at the end edge. Traditional tooling suffers from unstable positioning, easy wear of the punch, and burrs on the notch edge. Current tooling is particularly difficult to adapt to irregularly shaped intake pipes with an angle >15° and intake pipes with special geometric shapes, necessitating the development of an adjustable-angle positioning module.

[0035] Optimizing tooling improvements may require the use of three types of positioning technologies:

[0036] Radial positioning: Referring to the patented design of "muffler intake pipe drilling fixture", guide rods are set at the four corners of the worktable, and guide sleeves are fixedly installed on the lifting worktable. Precise vertical movement is achieved through the lifting cylinder. The clearance between the guide rod diameter and the inner diameter of the pipe end is controlled within 0.01-0.02mm / side to ensure radial positioning accuracy.

[0037] Axial limiting: An adjustable mechanical stop combined with a laser rangefinder is used. The stop is made of hardened tool steel HRC58-62 with a hard chrome plating, which improves wear resistance by 3 times; the laser ranging accuracy is ±0.01mm, and a signal is immediately triggered to lock the position when the tube end contacts the stop.

[0038] Circumferential anti-rotation: Drawing inspiration from the design concept of "front-end module tooling positioning structure," tooling positioning holes along the Z-direction may be set on the positioning bracket, with the anti-rotation pin diameter tolerance controlled at g6 level to match the pre-fabricated process holes at the pipe end. Alternatively, the thickness of the positioning bracket plate may be increased by 50% compared to the fender to improve rigidity and prevent deformation under stress.

[0039] This utility model combines the above technical solutions, as shown in the appendix. Figure 2 As shown, a pre-set directional marker block P is located at the inlet of the air intake pipe 1, between a pair of product parting lines L formed during the molding process of the air intake pipe 1, especially between two adjacent end notches M.

[0040] This utility model includes: a workbench 2, a mold table 3, a tooling fixture 4, a punch, a bracket, and a cylinder. The mold table 3 is fixed in the middle of the workbench 2, and the tooling fixture is installed on the mold table 3; the cylinder is mounted horizontally on the workbench 2 outside the mold table 3 via a bracket, and the front end of the cylinder is connected to the punch via a piston, with the front end of the punch extending toward the tooling fixture 4.

[0041] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0042] Example 1: As shown in the attached document Figure 3 , 4 As shown in Figures 5 and 6, four orthogonal notches M need to be punched along the two ends of the intake pipe 1; and a direction marker block P is set along the two ends of the intake pipe 1. Specifically, a square mold table 3 is placed in the middle of the rectangular worktable 2, and a tooling fixture 4 is installed in the middle of the mold table 3; a first bracket 7, a second bracket 11, a third bracket 15, and a fourth bracket 19 are fixed in the middle of the four sides of the worktable 2. A first cylinder 8, a second cylinder 12, a third cylinder 16, and a fourth cylinder 20 are respectively installed on the first bracket 7, the second bracket 11, the third bracket 15, and the fourth bracket 19. The piston front ends of the first cylinder 8, the second cylinder 12, the third cylinder 16, and the fourth cylinder 20 are respectively connected to the first punch 5, the second punch 9, the third punch 13, and the fourth punch 17. The feed direction of the first punch 5, the second punch 9, the third punch 13, and the fourth punch 17 is towards the center of the mold table 3 and the tooling fixture 4. The tooling fixture 4 includes a cylindrical tube-shaped support mold core 41 that is vertically installed at the center of the mold table 3 and the tooling fixture 4. The piston front ends of the first cylinder 8, the second cylinder 12, the third cylinder 16 and the fourth cylinder 20 are respectively connected to the first punch 5, the second punch 9, the third punch 13 and the fourth punch 17 through the first connector 6, the second connector 10, the third connector 14 and the fourth connector 18.

[0043] In particular, a punch blind groove 4101 is opened on the outer wall of the pipe support mold core 41. The punch blind groove 4101 corresponds to the front cutting head position of the first punch 5, the second punch 9, the third punch 13 and the fourth punch 17 and the end edge notch M of the air inlet pipe 1 port.

[0044] As described above, a guide mold 43 is installed on the mold table 3 around the pipe support mold core 41 between the first cylinder 8, the second cylinder 12, the third cylinder 16, and the fourth cylinder 20. A guide groove is vertically opened in the middle of the guide mold 43, through which the front sections of the first punch 5, the second punch 9, the third punch 13, and the fourth punch 17 pass. Specifically, a T-shaped slot A is opened inwardly in the middle of the first connector 6, the second connector 10, the third connector 14, and the fourth connector 18, and the rear ends of the first punch 5, the second punch 9, the third punch 13, and the fourth punch 17 are respectively engaged in the T-shaped slot A. Correspondingly, the guide mold 43 is inserted into the mold table 3. This design facilitates quick and easy replacement of the first punch 5, the second punch 9, the third punch 13, and the fourth punch 17.

[0045] Furthermore, a product orientation positioning block 42 is installed on the mold table 3 next to the pipe support mold core 41, and a positioning groove is opened on the upper inner side of the orientation positioning block 42. This positioning groove corresponds to the orientation mark block P on the outer wall of the air inlet pipe 1. Specifically, in this embodiment, the orientation positioning block 42 is located between the front cutting heads of the first punch 5 and the second punch 9, that is, between the two guide molds 43 outside the pipe support mold core 41.

[0046] Furthermore, a feed limit block B is slidably installed on the front section of the first punch 5, the second punch 9, the third punch 13, and the fourth punch 17 outside the guide mold 43. The feed limit block B is adjustable, and it can be designed as a sliding counterweight structure or a limit pin or screw.

[0047] Furthermore, an outer clamping block 44 for the pipe opening is installed inside the guide support 43 by means of a compression spring. The outer clamping block 44 has a guide groove in the vertical middle that corresponds to the guide support 43. In particular, a vibration damping pad is provided on the inner wall end face of the outer clamping block 44.

[0048] In this embodiment of the utility model, four cylinders—first cylinder 8, second cylinder 12, third cylinder 16, and fourth cylinder 20—are used in synchronous linkage. These four cylinders are responsible for the stamping motion, using the ISO15552 standard with a cylinder diameter of 63mm, a stroke of 150mm, and a working pressure of 0.4-0.6MPa. Under the drive of the cylinders, when the punch body is fed, with the assistance of the guide mold 43, the outer clamping block 44 of the front-push pipe is first sequentially controlled to act 0.5s before the stamping force, pressing the outer wall of the air inlet pipe 1 against the pipe support mold 41 to ensure the stability of the workpiece. The adjustable feed limit block B, which is slidably mounted on the punch body, will stop in time behind the guide mold 43 when the punch body moves forward to a predetermined distance. This ensures that the front end face of the punch body cutter does not excessively compress the bottom of the punch blind groove 4101 at the punching position on the outer wall of the pipe support mold 41. This avoids excessive impact on the air inlet pipe 1 and the tooling fixture 4 structure, which could lead to machining inaccuracies, and also protects the components from damage.

[0049] The implementation principle of this embodiment is as follows: The working steps of the tooling for punching a notch at the inlet of air intake pipe 1 are as follows:

[0050] 1) Check the tooling status: Ensure that all tooling components have been returned to their original positions to prepare for the next operation. There is no material for the air inlet pipe 1 or other materials on the workbench 2, mold table 3, and tooling fixture 4; the first punch 5, second punch 9, third punch 13, and fourth punch 17 are in place; the first cylinder 8, second cylinder 12, third cylinder 16, and fourth cylinder 20 are ready for use; the feed limit block B and direction marker block P are adjusted to the correct positions; the pipe support mold core 41, product direction positioning block 42, guide mold support 43, and pipe external clamping block 44 are intact.

[0051] 2) Product positioning: Place the air inlet pipe 1 into the tooling, that is, accurately insert one end of the air inlet pipe 1 into the outside of the pipe support mold core 41, and fix the direction of the air inlet pipe 1 in the positioning groove of the product direction positioning block 42 by using the direction mark block P to ensure the accuracy of the punching notch of the end edge notch M.

[0052] 3) Notch Punching Operation: The cylinder pushes the punch, precisely targeting the product opening to punch out the predetermined notch, completing the key processing step. Four cylinders—first cylinder 8, second cylinder 12, third cylinder 16, and fourth cylinder 20—work synchronously, with the first connector 6, second connector 10, third connector 14, and fourth connector 18 correspondingly pushing the first punch 5, second punch 9, third punch 13, and fourth punch 17 in a centripetal feed. The front ends of the first punch 5, second punch 9, third punch 13, and fourth punch 17 pass through the corresponding guide mold 43, driving the outer clamping block 44 to push and press the outer wall of the air pipe 1 against the pipe opening support mold core 41. Then, the cutting edges of the first punch 5, second punch 9, third punch 13, and fourth punch 17 feed steadily, and with the cooperation of the punching blind groove 4101, cut off the corresponding portion on the outer wall of the air inlet pipe 1, accurately punching out the notch M along the end. The appropriate cutting fluid is selected according to process requirements.

[0053] 4) Product Removal: After the cylinders return to their original positions, release the positioning device and safely remove the processed product to prepare for the next round of operations. Cylinders 8, 12, 16, and 20 all return to their original positions. Punches 5, 9, 13, and 17 retract. The cutting edges and external clamping blocks 44 of punches 5, 9, 13, and 17 disengage from the outer wall of the air inlet pipe 1. The air inlet pipe 1, accurately punched at the notch M, is then removed. Simultaneously, the punched waste material is cleaned up.

[0054] Preferably, the bodies of the first punch 5, second punch 9, third punch 13, and fourth punch 17 are made of tungsten steel (YG15) substrate. The cutting edges of the first punch 5, second punch 9, third punch 13, and fourth punch 17 are welded with 0.2mm thick cubic boron nitride (CBN) composite sheets, achieving a hardness of HV4000 and a lifespan 8-10 times that of traditional high-speed steel punches. For intake pipes 1 made of different materials such as aluminum alloy and stainless steel, the rake angle of the punch body module can be selected as 6° or 8°.

[0055] In the application of this utility model embodiment:

[0056] Precision improvement: By setting a pipe opening support mold core 41, a product direction positioning block 42, a guide mold 43, and a pipe opening external clamping block 44 on the tooling fixture 4; and designing a direction marking block P on the outside of the air inlet pipe 1 and a punching blind groove 4101 on the pipe opening external clamping block 44; the punching accuracy is improved to ±0.01mm, and the product qualification rate is increased from 92% to 98.5%.

[0057] Efficiency optimization: Compared with traditional processes, the processing time for a single air intake pipe 1 is reduced from 25 seconds to 8 seconds, and the changeover time for the first punch 5, the second punch 9, the third punch 13, and the fourth punch 17 or the pipe support mold core 41 is reduced from 15 minutes to 3 minutes. Manual loading and unloading are convenient, enabling continuous production of 8-10 pieces per minute.

[0058] Cost reduction: The first punch 5, the second punch 9, the third punch 13 and the fourth punch 17 have a life of 100,000 cycles, reducing mold costs by 60% compared to traditional punches; the system reduces cutting fluid consumption by 80%, effectively saving production costs.

[0059] In this embodiment of the utility model, according to a practical report from a certain automobile company, after the manual stamping line was transformed into a "single-person, single-machine" semi-automatic mode, the production efficiency increased by 40%, but special tooling for special end edge structures still needs to be developed.

[0060] Based on the embodiments of this utility model described above, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this utility model.

Claims

1. An optimized auxiliary tooling device for punching notches along the end of an automotive intake pipe, comprising a worktable (2), a mold table (3), a tooling fixture (4), a punch, a bracket, and a cylinder; characterized in that, A mold table (3) is fixed in the middle of the workbench (2), and a tooling fixture is installed on the mold table (3); a cylinder is installed on the workbench (2) outside the mold table (3) by means of a bracket, and the front end of the cylinder is connected to a punch through a piston, and the front end of the punch extends toward the tooling fixture (4); the tooling fixture (4) includes a cylindrical tube support mold core (41) that is erected in the center of the mold table (3) and the tooling fixture (4).

2. The optimized auxiliary tooling equipment for punching notches at the end of an automotive air intake pipe according to claim 1, characterized in that, A square or circular mold platform (3) is placed in the middle of the workbench (2).

3. The optimized auxiliary tooling equipment for punching notches along the end of an automotive air intake pipe according to claim 1, characterized in that, A product orientation positioning block (42) is installed next to the tube support mold core (41) on the mold table (3). The orientation positioning block (42) has a positioning groove on the upper inner side.

4. An optimized auxiliary tooling device for punching notches along the end of an automotive air intake pipe according to claim 1, characterized in that, A punched blind groove (4101) is opened on the outer wall of the pipe support mold core (41).

5. An optimized auxiliary tooling device for punching notches along the end of an automotive air intake pipe according to claim 1, characterized in that, A first support (7), a second support (11), a third support (15), and a fourth support (19) are fixed in the middle of the four sides of the workbench (2). A first cylinder (8), a second cylinder (12), a third cylinder (16), and a fourth cylinder (20) are respectively installed on the first support (7), the second support (11), the third support (15), and the fourth support (19). The piston front ends of the first cylinder (8), the second cylinder (12), the third cylinder (16), and the fourth cylinder (20) are respectively connected to the first punch (5), the second punch (9), the third punch (13), and the fourth punch (17). The feed direction of the first punch (5), the second punch (9), the third punch (13), and the fourth punch (17) is towards the center of the mold table (3) and the tooling fixture (4).

6. An optimized auxiliary tooling device for punching notches along the end of an automotive air intake pipe according to claim 5, characterized in that, The piston front ends of the first cylinder (8), the second cylinder (12), the third cylinder (16) and the fourth cylinder (20) are respectively connected to the first punch (5), the second punch (9), the third punch (13) and the fourth punch (17) through the first connector (6), the second connector (10), the third connector (14) and the fourth connector (18).

7. An optimized auxiliary tooling device for punching notches along the end of an automotive intake pipe according to claim 5, characterized in that, The first connector (6), the second connector (10), the third connector (14) and the fourth connector (18) have T-shaped slots A opened inward from the middle. The rear ends of the first punch (5), the second punch (9), the third punch (13) and the fourth punch (17) are respectively engaged in the T-shaped slots A; the guide mold (43) is inserted into the mold table (3).

8. An optimized auxiliary tooling device for punching notches along the end of an automotive intake pipe according to claim 5, characterized in that, On the mold platform (3) around the pipe support mold core (41) between the first cylinder (8), the second cylinder (12), the third cylinder (16) and the fourth cylinder (20), a guide mold (43) is installed respectively; a guide groove is opened vertically in the middle of the guide mold (43), and the front part of the first punch (5), the second punch (9), the third punch (13) and the fourth punch (17) pass through the guide groove.

9. An optimized auxiliary tooling device for punching notches along the end of an automotive intake pipe according to claim 8, characterized in that, An outer clamping block (44) is installed inside the guide support (43) by means of a compression spring. The outer clamping block (44) has a guide groove in the middle of its vertical direction that corresponds to the guide support (43).

10. An optimized auxiliary tooling device for punching notches along the end of an automotive air intake pipe according to claim 9, characterized in that, A vibration damping pad is provided on the inner wall end face of the outer tight block (44) of the pipe opening.

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