Demagnetizing device for an automobile igniter

Abstract

The utility model discloses a degaussing device for automobile igniter belongs to the technical field of automobile parts manufacturing. Including the degaussing box that is provided with the degaussing channel and the degaussing tool that can be in the degaussing channel and reciprocating movement along vertical direction, the degaussing tool top is provided with the profiling groove for along vertical direction activity embedding igniter and a plurality of with the upper half portion intercommunication of profiling groove and be used for the air inlet channel of accessing positive pressure gas source, a plurality of with the lower half portion intercommunication of profiling groove and be used for the chip removal channel of accessing negative pressure gas source, and the inner wall of profiling groove and the igniter between being placed in the profiling groove remain the gap, and the section of air inlet channel with profiling groove direct communication is inclined and sets down. The utility model discloses a degaussing device for automobile igniter, solved the present igniter demagnetization device demagnetization not sufficient, the problem that the surface has ferromagnetic substance residual.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts manufacturing technology, specifically relating to a demagnetizing device for automotive ignition systems. Background Technology

[0002] Current demagnetizing devices consist of a demagnetizing coil and a controller. The demagnetizing process involves manually placing the workpiece into a hollow cavity containing a wound coil, utilizing the magnetic field generated by the coil for demagnetization; however, this method is relatively inefficient. Some demagnetizing devices use an external conveyor track, placing the workpiece at one end of the track. This allows the workpiece to pass through a U-shaped cavity containing an internal wound coil, thus improving demagnetization efficiency. However, this device still has the following drawbacks: Firstly, adding a conveyor track significantly increases the footprint of the demagnetizing device. Furthermore, to meet the needs of mass demagnetizing, the number of coil bundles in the U-shaped cavity needs to be increased, thus increasing energy consumption and generating significant heat. Secondly, due to the varying positions of the workpieces on the conveyor track, it is difficult to collect the residual ferromagnetic material on the surface after demagnetization, easily leading to secondary contamination of the workpieces. Additionally, the varying positions of the workpieces can result in inconsistent levels of demagnetization. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a demagnetizing device for automotive ignition systems, which solves the problems of insufficient demagnetization and ferromagnetic residues on the surface of existing ignition demagnetizing devices.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a demagnetizing device for an automotive igniter, comprising a demagnetizing box with a demagnetizing channel and a demagnetizing fixture capable of reciprocating in the vertical direction within the demagnetizing channel; The demagnetizing fixture is provided with a contoured groove at the top for vertically embedding an igniter, and several air inlet channels connected to the upper half of the contoured groove and used for connecting to a positive pressure air source, and several chip removal channels connected to the lower half of the contoured groove and used for connecting to a negative pressure air source. A gap is left between the inner wall of the contoured groove and the igniter placed in the contoured groove. The section of the air intake channel that is directly connected to the contour groove is inclined downwards.

[0005] Optionally, the demagnetizing box is provided with a cavity covering the outer periphery of the demagnetizing channel, and an intake fan and an exhaust fan that can communicate with the cavity are symmetrically arranged on the demagnetizing box along the demagnetizing channel.

[0006] Optionally, the demagnetizing box includes a box-shaped base with a first stepped through hole at the bottom and a top cover that is detachably connected to the top opening of the box-shaped base. Two fan mounting ports are provided on the side wall of the box-shaped base, which are symmetrically arranged along the first stepped through hole. The upper cover is provided with a second stepped through hole arranged coaxially with the first stepped through hole, and a cylindrical coil support corresponding to the first stepped through hole and the second stepped through hole is sandwiched between the upper cover and the box-shaped base. A demagnetizing coil is sleeved on the outer periphery of the cylindrical coil support.

[0007] Optionally, the demagnetizing fixture includes a lower fixture and an upper fixture that is sealed to the top of the lower fixture; The contour groove is located in the middle of the top side of the upper tooling, and the air intake channel includes a first section that is inclinedly located on the outer periphery of the top of the upper tooling and connected to the upper half of the contour groove, and a second section that is located on the bottom side of the upper tooling and connected to the first section. The chip removal channel includes a third section located on the outer periphery of the upper tooling and connected to the lower half of the contour groove, and a fourth section located on the bottom side of the upper tooling and connected to the third section. The upper tooling is detachably connected to a sealing plug for sealing the end openings of the first section and the third section; The top side of the lower tooling is provided with a first annular groove corresponding to the end opening of the second segment and a second annular groove corresponding to the end opening of the fourth segment, and the bottom side of the lower tooling is provided with an air inlet hole communicating with the first annular groove and a first chip removal hole communicating with the second annular groove.

[0008] Optionally, the first section on several of the air intake channels and the third section on several of the chip removal channels are arranged in a circumferential array along the contoured groove.

[0009] Optionally, the lower tooling has a second chip removal through hole at the top center, the upper tooling has a positioning screw part at the bottom that is threadedly connected to the top opening of the second chip removal through hole, and the bottom of the contour groove has a third chip removal through hole that communicates with the second chip removal through hole. The contour groove and the second chip removal through hole are arranged coaxially.

[0010] Optionally, an annular sealing ring is embedded on the top side of the lower tooling, positioned between the first annular groove and the second annular groove.

[0011] Optionally, the demagnetizing box is fixedly connected to the top of the mounting bracket, and a linear guide rail is provided on the mounting bracket along the axial direction of the demagnetizing channel. A mounting plate for installing the demagnetizing fixture is connected to the linear guide rail via a slider, and the mounting plate is connected to the output end of the linear drive unit.

[0012] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: (1) By placing each igniter product into the contour groove on the demagnetizing fixture and allowing the igniter to pass through a strong alternating magnetic field twice along with the demagnetizing fixture, it is ensured that the igniter can be fully demagnetized. At the same time, during the demagnetization process of the igniter, the positive pressure air source connected through the air channel can blow off the ferromagnetic material remaining on the surface of the igniter, and the blown-off ferromagnetic material can be sucked out by the chip removal channel and collected in a concentrated manner; (2) By adding an intake fan and an exhaust fan to the demagnetizing box, the heat generated after the demagnetizing coil is energized can be quickly discharged under the drive of the high-speed flowing gas around the demagnetizing coil, ensuring that the demagnetizing channel can stably generate a strong alternating magnetic field. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a schematic diagram of the structure of the demagnetizing device for an automotive ignition system in a preferred embodiment of this utility model; Figure 2 This is a schematic diagram of the demagnetizing box in a preferred embodiment of the present invention; Figure 3 This is an exploded structural diagram of the demagnetizing box in a preferred embodiment of the present invention; Figure 4 This is a schematic diagram of the demagnetizing fixture in a preferred embodiment of the present invention; Figure 5 This is a cross-sectional view of the demagnetizing fixture in a preferred embodiment of the present invention; Figure 6 This is a schematic diagram of the lower tooling in a preferred embodiment of the present invention; The components include: 1. Demagnetizing box; 101. Demagnetizing channel; 2. Demagnetizing fixture; 201. Contouring groove; 202. Air intake channel; 2021. First section; 2022. Second section; 203. Chip removal channel; 2031. Third section; 2032. Fourth section; 3. Igniter; 4. Intake fan; 5. Exhaust fan; 6. Box-shaped base; 601. First stepped through hole; 602. Fan mounting port; 7. Top cover; 701. Second stepped through hole; 8. Cylindrical... 9. Coil bracket; 10. Demagnetizing coil; 11. Lower fixture; 12. First annular groove; 13. Second annular groove; 14. Air inlet; 15. First chip removal hole; 16. Second chip removal hole; 17. Upper fixture; 18. Positioning screw; 19. Third chip removal hole; 10. Sealing plug; 10. Annular sealing ring; 11. Mounting bracket; 12. Linear guide rail; 13. Mounting plate; 14. Linear drive unit. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0016] It should be noted that if directional indicators (such as up, down, bottom, top, etc.) are involved in this embodiment, these directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. Unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. Example 1

[0017] like Figures 1-6 As shown, a demagnetizing device for an automotive ignition system includes a demagnetizing box 1 with a demagnetizing channel 101 and a demagnetizing fixture 2 that can reciprocate vertically within the demagnetizing channel 101. The demagnetizing fixture 2 is used to carry the automotive ignition system 3 that needs to be demagnetized. A strong alternating magnetic field can be generated within the demagnetizing channel 101. During the reciprocating movement of the demagnetizing fixture 2 carrying the automotive ignition system 3 within the demagnetizing channel 101, the automotive ignition system 3 can be fully demagnetized.

[0018] Specifically, the top of the demagnetizing fixture 2 is equipped with a contoured groove 201 for vertically embedding the igniter 3. That is, after the operator has completely passed the demagnetizing channel 101 vertically from bottom to top through the contoured groove 201, the igniter 3 can be placed upright in the contoured groove 201. Then, the demagnetizing fixture 2 can complete the demagnetization of the igniter 3 through a single reciprocating motion: the demagnetizing fixture 2 descends vertically until the igniter 3 has completely passed through the demagnetizing channel 101, then rises again until it has completely passed through the demagnetizing channel 101 and stops. Afterwards, the operator can remove the demagnetized igniter 3 and place another igniter 3 that needs demagnetization. The entire operation process is simple and orderly, effectively ensuring the efficiency of demagnetizing the igniter 3. During this process, the igniter 3 can remain stable due to its fit with the contoured groove 201 and its own weight, thus preventing it from detaching from the contoured groove 201. Meanwhile, the igniter 3 placed in the contour groove 201 can also be fully demagnetized by passing through the strong alternating magnetic field twice, thereby effectively improving the consistency of demagnetization of the igniter 3.

[0019] It should be noted that in the technical solution, the demagnetizing fixture 2 is also equipped with several air inlet channels 202 that communicate with the upper half of the contour groove 201 and are used to access a positive pressure air source, and several chip removal channels 203 that communicate with the lower half of the contour groove 201 and are used to access a negative pressure air source. The section of the air inlet channel 202 that communicates directly with the contour groove 201 is inclined downwards, and a gap is left between the inner wall of the contour groove 201 and the igniter 3 placed within the contour groove 201 for the passage of ferromagnetic materials. Therefore, during the demagnetization process of the igniter 3, one or more stable chip removal paths will be formed around the igniter 3 in the contour groove 201. That is, the positive pressure air source accessed by the air inlet channel 202 can tilt downwards and blow off the ferromagnetic materials remaining on the surface of the igniter 3, and the blown-off ferromagnetic materials can be sucked out by the chip removal channels 203. This effectively prevents the presence of residual ferromagnetic substances on the surface of the igniter 3 and inside the contour groove 201.

[0020] Furthermore, such as Figure 2 , Figure 3 As shown, the demagnetizing box 1 has a cavity surrounding the demagnetizing channel 101. An intake fan 4 and an exhaust fan 5, respectively communicating with the cavity, are symmetrically arranged along the demagnetizing channel 101 on the demagnetizing box 1. When the power is turned on and the exhaust fan 5 is activated, it allows for high-speed airflow within the cavity, thereby quickly reducing the heat dissipated by the strong alternating magnetic field generated by the demagnetizing channel 101 and ensuring that the demagnetizing channel 101 can stably generate a strong alternating magnetic field.

[0021] It is important to note that, such as Figure 3As shown, in this technical solution, the demagnetizing box 1 includes a box-shaped base 6 with a first stepped through hole 601 at the bottom and a top cover 7 detachably connected to the top opening of the box-shaped base 6. The top cover 7 and the box-shaped base 6 can form a cavity structure. Specifically, the top cover 7 and the box-shaped base 6 can be detachably connected by fasteners such as bolts and clips. The side wall of the box-shaped base 6 has two fan mounting ports 602 symmetrically arranged along the first stepped through hole 601 for mounting the intake fan 4 and the exhaust fan 5. The upper cover 7 has a second stepped through hole 701 coaxially arranged with the first stepped through hole 601. A cylindrical coil bracket 8 corresponding to the first stepped through hole 601 and the second stepped through hole 701 is sandwiched between the upper cover 7 and the box-shaped base 6. The two ends of the cylindrical coil bracket 8 can be respectively embedded at the opening edges of the first stepped through hole 601 and the second stepped through hole 701, thereby ensuring the positional relationship between the upper cover 7, the box-shaped base 6 and the cylindrical coil bracket 8. At the same time, a demagnetizing coil 9 is sleeved on the outer periphery of the cylindrical coil bracket 8. When energized, the demagnetizing coil 9 can generate a strong alternating magnetic field around it, thereby forming a demagnetizing channel 101 between the first stepped through hole 601, the inner cavity of the cylindrical coil bracket 8 and the second stepped through hole 701. Example 2

[0022] like Figures 3-6 As shown, based on Embodiment 1, the demagnetizing fixture 2 adopts a split structure to facilitate the processing of the intake channel 202 and the exhaust channel. That is, the demagnetizing fixture 2 includes a lower fixture 10 and an upper fixture 11 that is sealed and connected to the top of the lower fixture 10.

[0023] Specifically, the contour groove 201 is located at the top center of the upper tooling 11. The air intake channel 202 includes a first section 2021 inclinedly located on the outer periphery of the top of the upper tooling 11 and connected to the upper half of the contour groove 201, and a second section 2022 located on the bottom side of the upper tooling 11 and connected to the first section 2021. The chip removal channel 203 includes a third section 2031 located on the outer periphery of the upper tooling 11 and connected to the lower half of the contour groove 201, and a fourth section 2032 located on the bottom side of the upper tooling 11 and connected to the third section 2031. The upper tooling 11 is detachably connected to a sealing plug 12 for sealing the end openings of the first segment 2021 and the third segment 2031. The sealing plug 12 can be a bolt fitted with an O-ring seal. The bolt can be threadedly connected to the port of the first segment 2021 and the third segment 2031. When the bolt is tightened to its port thread, the O-ring seal is compressed and seals the gap between the bolt and the port, thereby sealing the ports of the first segment 2021 and the third segment 2031 located on the outer periphery of the upper tooling 11. After the sealing plug 12 is removed from the upper tooling 11, the operator can quickly clear any possible blockages in the first segment 2021 and the third segment 2031 through the exposed end openings.

[0024] It should be noted that the first section 2021 on several air intake channels 202 is arranged in a circumferential array along the contour groove 201 to facilitate the thorough blowing off of ferromagnetic material from the surface of the igniter 3 and avoid dead zones. The top side of the lower tooling 10 is provided with a first annular groove 1001 corresponding to the end opening of the second section 2022 and a second annular groove 1002 corresponding to the end opening of the fourth section 2032. The bottom side of the lower tooling 10 is provided with an air intake through hole 1003 communicating with the first annular groove 1001 and a first chip removal through hole 1004 communicating with the second annular groove 1002. The air inlet 1003 and the first chip removal 1004 are located at one end on the bottom side of the lower tooling 10 and can be connected to a gas pipe connector for accessing a gas source through threaded connection, welding, or plug-in connection. This allows the positive pressure gas to be supplied to multiple air inlet channels 202 simultaneously through the first annular groove 1001 after the air inlet 1003 is connected to a positive pressure gas source, thereby blowing off the ferromagnetic material on the surface of the igniter 3. When the first chip removal 1004 is connected to a negative pressure gas source, the ferromagnetic material can enter the second annular groove 1002 through multiple chip removal channels 203 and be discharged from the first chip removal 1004. It should be noted that, to prevent dead zones when the chip removal channels 203 are sucking up ferromagnetic material, the fourth segment 2032 on the chip removal channel 203 is tangent to the bottom of the contour groove 201. At the same time, the third segments 2031 on several chip removal channels 203 are arranged in a circumferential array along the contour groove 201.

[0025] The above, such as Figure 5 , Figure 6 As shown, the lower tooling 10 has a second chip removal through hole 1005 at the top center, and the upper tooling 11 has a positioning screw part 1101 at the bottom that is threadedly connected to the top opening of the second chip removal through hole 1005. The bottom of the contour groove 201 has a third chip removal through hole 1102 that communicates with the second chip removal through hole 1005. The contour groove 201 and the second chip removal through hole 1005 are arranged coaxially, so that the upper tooling 11 and the lower tooling 10 can be accurately assembled, and ensure that a passage can be formed between the first annular groove 1001 and the second section 2022, and between the second annular groove 1002 and the fourth section 2032.

[0026] It should be noted that the diameter of the end opening of the third chip removal through hole 1102 that communicates with the bottom of the contour groove 201 is smaller than the diameter of the bottom of the contour groove 201, and the fourth section 2032 on the chip removal channel 203 is tangent to the bottom of the contour groove 201, so that the outer periphery of one end of the igniter 3 can overlap the bottom of the contour groove 201. During the process of the operator removing the igniter 3 from the contour groove 201, some ferromagnetic material that may remain in the contour groove 201 can also be discharged through the third chip removal through hole 1102 and the second chip removal through hole 1005.

[0027] In this embodiment, the top side of the lower tooling 10 can fit tightly against the bottom side of the upper tooling 11. That is, when the positioning screw part 1101 on the upper tooling 11 is threadedly fastened to the top opening of the second chip removal through hole 1005, the air intake channel 202, the first annular groove 1001, and the air intake through hole 1003 can be kept connected, and the chip removal channel 203, the second annular groove 1002, and the first chip removal through hole 1004 can be kept connected. In order to avoid the air intake channel 202 and the chip removal channel 203 from interfering with each other, in this technical solution, an annular sealing ring 13 is embedded on the top side of the lower tooling 10 and placed between the first annular groove 1001 and the second annular groove 1002 to separate the first annular groove 1001 and the second annular groove 1002. Example 3

[0028] like Figure 1 As shown, based on Embodiment 1, the demagnetizing box 1 is fixedly connected to the top of the mounting bracket 14. A linear guide rail 15 is arranged on the mounting bracket 14 along the axial direction of the demagnetizing channel 101. The linear guide rail 15 is arranged vertically, and a mounting plate 16 for mounting the demagnetizing fixture 2 is connected to the linear guide rail 15 via a slider. That is, the mounting bracket 14, the linear guide rail 15, and the mounting plate 16 can improve the accuracy and smoothness of the reciprocating movement of the demagnetizing fixture 2. At the same time, in this embodiment, the mounting plate 16 is connected to the output end of the linear drive unit 17, and the linear drive unit 17 is used to drive the mounting plate 16 and the demagnetizing fixture 2 to reciprocate along a fixed trajectory.

[0029] It should be noted that in this embodiment, the linear drive unit 17 includes, but is not limited to, servo slides, linear cylinders, lead screw slides, electric cylinders, etc., to precisely control the speed of the igniter 3 passing through the demagnetization channel 101, which helps to fully demagnetize the product. Compared with the structure of using a conveyor track to transport products in batches for demagnetization, the demagnetization device for automotive igniters in this technical solution has a more compact structure and does not occupy a large floor space.

[0030] Working principle: First, after the demagnetizing coil 9 in the demagnetizing box 1 is energized, it forms a demagnetizing channel 101. The operator can then vertically pass through the demagnetizing channel 101 from the top of the demagnetizing fixture 2, which has a contour groove 201, and place the igniter 3 upright in the contour groove 201. Finally, driven by the linear drive unit 17, the demagnetizing fixture 2 descends vertically until the igniter 3 has completely passed through the demagnetizing channel 101, and then rises again until it has completely passed through the demagnetizing channel 101 before stopping. The igniter 3 placed in the contour groove 201 is thus fully demagnetized by passing through the strong alternating magnetic field twice. During this process, the positive pressure air source connected to the air intake channel 202 tilts downwards and blows off the ferromagnetic material remaining on the surface of the igniter 3. The blown-off ferromagnetic material is then sucked out by the chip removal channel 203, effectively preventing ferromagnetic material from remaining on the surface of the igniter 3 and in the contour groove 201. The intake fan 4 and exhaust fan 5 are symmetrically arranged along the upper edge of the demagnetization channel 101 in the demagnetization box 1, which enables the air around the demagnetization coil 9 to circulate at high speed, thereby quickly reducing the heat dissipated by the demagnetization channel 101 due to the generation of a strong alternating magnetic field, and ensuring that the demagnetization channel 101 can stably generate a strong alternating magnetic field.

[0031] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A demagnetizing device for an automotive ignition system, characterized in that: It includes a demagnetizing box (1) with a demagnetizing channel (101) and a demagnetizing fixture (2) that can reciprocate in the vertical direction in the demagnetizing channel (101). The demagnetizing fixture (2) is provided with a contoured groove (201) for vertically embedding the igniter (3) at the top, as well as several air inlet channels (202) connected to the upper half of the contoured groove (201) and used for connecting to a positive pressure air source, and several chip removal channels (203) connected to the lower half of the contoured groove (201) and used for connecting to a negative pressure air source. A gap is left between the inner wall of the contoured groove (201) and the igniter (3) placed in the contoured groove (201). The section of the air intake channel (202) that is directly connected to the contour groove (201) is inclined downward.

2. The demagnetizing device for an automotive igniter according to claim 1, characterized in that: The demagnetizing box (1) is provided with a cavity covering the outer periphery of the demagnetizing channel (101), and an intake fan (4) and an exhaust fan (5) that can communicate with the cavity are symmetrically arranged on the demagnetizing box (1) along the demagnetizing channel (101).

3. The demagnetizing device for an automotive igniter according to claim 2, characterized in that: The demagnetizing box (1) includes a box-shaped base (6) with a first stepped through hole (601) at the bottom and a top cover (7) detachably connected to the top opening of the box-shaped base (6). Two fan mounting ports (602) are provided on the side wall of the box-shaped base (6) in a symmetrical arrangement along the first stepped through hole (601). The upper cover (7) is provided with a second stepped through hole (701) arranged coaxially with the first stepped through hole (601), and a cylindrical coil support (8) that corresponds to the first stepped through hole (601) and the second stepped through hole (701) is sandwiched between the upper cover (7) and the box-shaped base (6). The outer periphery of the cylindrical coil support (8) is provided with a demagnetizing coil (9).

4. The demagnetizing device for an automotive igniter according to claim 1, characterized in that: The demagnetizing fixture (2) includes a lower fixture (10) and an upper fixture (11) that is sealed to the top of the lower fixture (10). The contour groove (201) is located at the top center of the upper tooling (11), and the air intake channel (202) includes a first section (2021) that is inclinedly located on the outer periphery of the top of the upper tooling (11) and connected to the upper half of the contour groove (201), and a second section (2022) that is located on the bottom side of the upper tooling (11) and connected to the first section (2021). The chip removal channel (203) includes a third section (2031) opened on the outer periphery of the upper tooling (11) and connected to the lower half of the contour groove (201), and a fourth section (2032) opened on the bottom side of the upper tooling (11) and connected to the third section (2031). The upper tooling (11) is detachably connected to a sealing plug (12) for sealing the end openings of the first section (2021) and the third section (2031). The lower tooling (10) is provided with a first annular groove (1001) corresponding to the end opening of the second segment (2022) and a second annular groove (1002) corresponding to the end opening of the fourth segment (2032) on its top side, and the lower tooling (10) is provided with an air inlet (1003) communicating with the first annular groove (1001) and a first chip removal through hole (1004) communicating with the second annular groove (1002) on its bottom side.

5. The demagnetizing device for an automotive igniter according to claim 4, characterized in that: The first section (2021) on several of the air intake channels (202) and the third section (2031) on several of the chip removal channels (203) are arranged in a circular array along the contour groove (201).

6. The demagnetizing device for an automotive igniter according to claim 4, characterized in that: The lower tooling (10) has a second chip removal through hole (1005) at the top center, the upper tooling (11) has a positioning screw part (1101) at the bottom that is threadedly connected to the top opening of the second chip removal through hole (1005), and the bottom of the contour groove (201) has a third chip removal through hole (1102) that communicates with the second chip removal through hole (1005). The contour groove (201) and the second chip removal through hole (1005) are arranged coaxially.

7. The demagnetizing device for an automotive igniter according to claim 4, characterized in that: The lower tooling (10) is fitted with an annular sealing ring (13) on its top side, which is placed between the first annular groove (1001) and the second annular groove (1002).

8. The demagnetizing device for an automotive igniter according to claim 1, characterized in that: The demagnetizing box (1) is fixedly connected to the top of the mounting bracket (14). A linear guide rail (15) is provided on the mounting bracket (14) along the axial direction of the demagnetizing channel (101). A mounting plate (16) for installing the demagnetizing fixture (2) is connected to the linear guide rail (15) via a slider. The mounting plate (16) is connected to the output end of the linear drive unit (17).

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