Fine blanking die for outer teeth of electric recliner of automobile seat

Abstract

The invention belongs to the technical field of automobile part manufacturing, and discloses a fine blanking die for outer teeth of an electric recliner of an automobile seat, which comprises a hydraulic cylinder I and an upper die mounted at the output end of the hydraulic cylinder I. Through cooperation of structures such as a limiting assembly and a pressurizing assembly, a second hydraulic cylinder drives a bottom plate and a guide shaft to drive a lifting assembly to abut against the inner wall of an outer tooth to ascend, and gas volatilized by alcohol existing in a telescopic cylinder in advance is compressed; air pressure in the telescopic cylinder pushes the sealing plate to ascend, alcohol and gas are evenly sprayed to the gap through the metal pipe, the inductor detects that the alcohol content reaches the standard and starts the electric arc generator, the electric arc ignites the alcohol, the volume of the alcohol is expanded, and therefore the outer teeth are better jacked and supported to ascend, and the outer teeth ascend in a vertical state through limitation of the lifting assembly. And excessive friction between the outer teeth and the lower die is further avoided, so that defective products are avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of automotive parts manufacturing, and specifically relates to a fine blanking die for the external teeth of an electric seat recliner in an automobile. Background Art

[0002] The electric seat recliner of an automobile generally drives the internal planetary gear structure through a motor to achieve precise adjustment of the seat back angle. Compared with manual seat adjustment, the driver can adjust to the best sitting position with one key, and at the same time, it can also avoid the physical consumption of manual adjustment. In order for the mechanism to operate for a long time and ensure the stability of the seat structure during a collision to protect the safety of the occupants, most of the structures in the seat recliner are made by fine blanking dies to ensure that the dimensions of the external teeth produced will not have excessive deviations. This includes the external teeth of the seat recliner. As a gear, after fine blanking, the angle and size of the tooth tips should not be affected too much, otherwise it will cause the seat recliner to work smoothly. Therefore, in the existing manufacturing technology solutions, high-strength alloy steel is mostly used for the external teeth. However, after fine blanking, the external teeth will adhere to the die. During the process of removing the external teeth, due to the wear of the robotic arm after long-term work, the grasping angle may deviate, resulting in the upward deviation of the external teeth and collision or rubbing with the die. This will cause the externally fine-blanked teeth to be manually determined as unqualified products. For this reason, we provide a fine blanking die for the external teeth of an electric seat recliner in an automobile. Summary of the Invention

[0003] To solve the problems raised in the above background art, the present invention provides a fine blanking die for the external teeth of an electric seat recliner in an automobile, which solves the problems that after the robotic arm works for a long time, wear occurs, the grasping angle deviates, resulting in the upward deviation of the external teeth and collision or rubbing with the die.

[0004] To achieve the above object, the present invention provides the following technical solution: A fine blanking die for the external teeth of an electric seat recliner in an automobile, including a first hydraulic cylinder and an upper die installed at the output end of the first hydraulic cylinder, and further including a base; A lower die installed on the top of the base; A second hydraulic cylinder provided on the top of the base; A limiting component installed at the output end of the second hydraulic cylinder. The limiting component includes a bottom plate installed at the output end of the second hydraulic cylinder. A guiding shaft is installed on the top of the bottom plate. A bearing plate is elastically connected to the top of the bottom plate through a first spring. A limiting plate is fixedly connected to the outer periphery of the bearing plate; A cleaning component installed on the bearing plate External teeth placed on the lower die; A pressurizing component installed on the top of the bottom plate at equal circumferential angles; The pressurizing assembly includes a telescopic cylinder connected between the bottom plate and the bearing plate. The interior of the telescopic cylinder is divided into two independent upper and lower chambers, and a first metal pipe and a second metal pipe are respectively communicated therewith. The end of the second metal pipe is communicated with an alcohol tank. The end of the first metal pipe is communicated with a limiting plate. An arc generator and an inductor are installed on the bearing plate. A sealing plate seals between the two chambers, and a lifting assembly is connected to the top of the sealing plate through a second spring; The second hydraulic cylinder extends and supports the bottom plate and the guide shaft to rise. The guide shaft drives the lifting assembly to be fixed to the inner wall of the external teeth and drives it to rise, and a gap for communicating with the end of the first metal pipe is generated between the bottom of the external teeth and the top of the lower die.

[0005] Preferably, the first spring is wound around the top of the guide shaft. The bearing plate is movably sleeved on the outer periphery of the guide shaft, and the top of the limiting plate is closely attached to the bottom of the lower die.

[0006] Preferably, the alcohol tank is fixedly installed at the bottom of the bearing plate. A solenoid valve is arranged inside the metal pipe, and an elastic one-way valve is arranged on the telescopic cylinder.

[0007] Preferably, the lifting assembly includes telescopic rods circumferentially and equiangularly installed on the top of the bearing plate. The telescopic ends of the telescopic rods are elastically connected to the top of the bearing plate through tension springs. The tops of the telescopic rods are slidably installed with lifting plates. The tops of the lifting plates are commonly connected in series through snap rings. The inner sides of the lifting plates and the edges of the tops of the guide shafts are chamfered and adapted to each other.

[0008] Preferably, the outer ends of the lifting plates are made of copper and are arc-shaped. The second spring is connected to the bottom of the telescopic rod, and the second spring always supports the sealing plate through the telescopic rod to seal the two chambers inside the telescopic cylinder.

[0009] Preferably, the cleaning assembly includes an air storage box installed on the top of the bearing plate. A follower ring is movably clamped on the outside of the air storage box. The inside of the air storage box is communicated with a corrugated pipe installed on the top of the bearing plate through an air pipe. A plurality of conduits are circumferentially and equiangularly penetrated through the outer periphery of the follower ring, and the conduits are communicated with the air storage box.

[0010] Preferably, the top of the corrugated pipe is connected to the bottom of the chamfered part of the guide shaft. The inner side of the corrugated pipe is closely attached to the outer periphery of the guide shaft, and the corrugated pipe is located inside the tension spring.

[0011] Preferably, the conduits are made of carbon fiber composite materials, and a notch is obliquely arranged on the outside of the conduits.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: Through the cooperation of structures such as a limiting component and a pressurizing component, the second hydraulic cylinder drives the bottom plate and the guide shaft to drive the lifting component to support and rise on the inner wall of the external tooth. The gas volatilized from the alcohol previously present in the telescopic cylinder is compressed. After a gap appears between the bottom of the external tooth and the top of the lower mold, the air pressure inside the telescopic cylinder pushes the sealing plate upward, and the alcohol and gas are evenly sprayed through the metal pipe 1 to the gap. The sensor detects that the alcohol content reaches the standard and activates the arc generator, and the arc ignites the alcohol, and its volume expands, so as to better support the external tooth to rise. And through the limitation of the lifting component, the external tooth rises in a vertical state, further avoiding excessive friction between the external tooth and the lower mold, thus causing defective products.

[0013] Through the cooperation of structures such as a lifting component and a limiting component, when the guide shaft rises, its chamfer is closely attached to the chamfer of the lifting plate. Since the elastic coefficient of the snap ring is less than the elastic coefficient of the tension spring, it can then push the lifting plate to slide on the top of the telescopic rod. Until the outside of the lifting plate supports against the inner wall of the lower mold, when the guide shaft rises, it will drive the lifting plate to rise through its chamfer, and the telescopic rod extends. At this time, a gap appears in the lower mold for alcohol to enter. And there are several lifting plates that evenly support against the inner wall of the lower mold, which makes the upward force applied to the lower mold evenly distributed at the ends of each lifting plate, and the ends of the lifting plates are made of copper, thus avoiding the inclination of the external tooth when rising, and at the same time reducing the possibility of scratching the inner wall of the lower mold when the lifting plate drives it to rise.

[0014] Through the cooperation of structures such as a limiting component and a cleaning component, when the external tooth disengages from the lifting component, the second hydraulic cylinder retracts to the initial position, and the bottom plate and the guide shaft descend synchronously. The guide shaft squeezes the bellows, and the air inside it flows through the air pipe and the air storage box into the conduit, and finally will be sprayed onto the lower mold through the inclined notch on the conduit. The inclined notch design of the conduit makes the air push the follower ring and each conduit to rotate, so that the discharged air can better blow onto the lower mold. Further, it accelerates the drying of the water vapor generated by the ignition of alcohol, and at the same time can also remove the substances generated by evaporation. Under the action of the wind, the heat generated by the combustion of alcohol is also quickly taken away. Description of the Drawings

[0015] Figure 1 is a schematic diagram of the external structure of the present invention; Figure 2 is a schematic diagram of the structural cooperation between the lower mold and the external tooth of the present invention; Figure 3 is a schematic diagram of the inner structure of the lower mold of the present invention; Figure 4 For the present invention Figure 3 is an enlarged schematic diagram at A in; Figure 5 is a schematic sectional view of the inner structure of the lower mold of the present invention; Figure 6 Front view of the internal structure section of the limit plate of the present invention; Figure 7 Schematic diagram of the internal structure of the limit plate of the present invention; Figure 8 Schematic diagram of the cooperation between the lifting plate and the tension spring structure of the present invention.

[0016] In the figure: 1. Hydraulic cylinder 1; 2. Upper die; 3. Lower die; 4. Base; 5. Hydraulic cylinder 2; 6. Cleaning assembly; 61. Air storage box; 62. Follow-up ring; 63. Conduit; 64. Air pipe; 65. Bellows; 7. Limiting assembly; 71. Bottom plate; 72. Spring 1; 73. Bearing plate; 74. Limit plate; 75. Guide shaft; 8. Pressurizing assembly; 81. Telescopic cylinder; 82. Metal pipe 1; 83. Metal pipe 2; 84. Alcohol tank; 85. Arc generator; 86. Inductor; 87. Sealing plate; 88. Spring 2; 9. Lifting assembly; 91. Telescopic rod; 92. Lifting plate; 93. Snap ring; 94. Tension spring; 10. External teeth. Detailed implementation manners

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] As Figures 1 to 8 shown, the present invention provides a fine blanking die for the external teeth of an automotive seat electric angle adjuster, including a hydraulic cylinder 1 and an upper die 2 installed at the output end of the hydraulic cylinder 1, and further including a base 4; A lower die 3 installed on the top of the base 4; A hydraulic cylinder 2 provided on the top of the base 4; A limiting assembly 7 installed at the output end of the hydraulic cylinder 2. The limiting assembly 7 includes a bottom plate 71 installed at the output end of the hydraulic cylinder 2. A guide shaft 75 is installed on the top of the bottom plate 71. A bearing plate 73 is elastically connected to the top of the bottom plate 71 through a spring 1. A limit plate 74 is fixedly connected to the outer periphery of the bearing plate 73; A cleaning assembly 6 installed on the bearing plate 73 External teeth 10 placed on the lower die 3; A pressurizing assembly 8 installed circumferentially and equiangularly on the top of the bottom plate 71; The pressurizing assembly 8 includes a telescopic cylinder 81 connected between the bottom plate 71 and the bearing plate 73. The interior of the telescopic cylinder 81 is divided into two independent upper and lower chambers, and a first metal tube 82 and a second metal tube 83 are respectively connected to them. The end of the second metal tube 83 is connected to an alcohol tank 84. The end of the first metal tube 82 is connected to the limiting plate 74. An arc generator 85 and an inductor 86 are installed on the bearing plate 73. A sealing plate 87 seals between the two chambers. The top of the sealing plate 87 is connected to a lifting assembly 9 through a second spring 88; The second hydraulic cylinder 5 extends and props up the bottom plate 71 and the guide shaft 75 to rise. The guide shaft 75 drives the lifting assembly 9 to be fixed to the inner wall of the external teeth 10 and drives it to rise. A gap for connecting the end of the first metal tube 82 is generated between the bottom of the external teeth 10 and the top of the lower die 3.

[0019] The alcohol tank 84 is fixedly installed at the bottom of the bearing plate 73. A solenoid valve is arranged inside the metal tube 83, and an elastic one-way valve is arranged on the telescopic cylinder 81.

[0020] Adopting the above solution: When the first hydraulic cylinder 1 is started, it drives the upper die 2 and cooperates with the lower die 3 to perform fine blanking work on the external teeth 10; After the fine blanking work is completed, the bottom plate 71 is driven to rise by the second hydraulic cylinder 5. The bottom plate 71 drives the bearing plate 73 and the limiting plate 74 to rise through the first spring 72. The limiting plate 74 is close to the bottom of the lower die 3, so that the bottom of the telescopic cylinder 81 and the bearing plate 73 are in a fixed state. The second hydraulic cylinder 5 continues to extend, the guide shaft 75 rises and drives the lifting assembly 9 to prop up against the inner wall of the external teeth 10, and finally drives the external teeth 10 to rise a certain distance. There will be a gap between the bottom of the external teeth 10 and the top of the lower die 3; At the same time, when the bottom plate 71 rises, it will also compress the telescopic cylinder 81. The movable end of the telescopic cylinder 81 preferentially closes the connection of the second metal tube 83. After the alcohol tank 84 is connected to the telescopic cylinder 81 each time, it will inject 5 ml of atomized alcohol into the telescopic cylinder 81 through the solenoid valve arranged inside the second metal tube 83. When the telescopic cylinder 81 is compressed, the alcohol previously existing in the telescopic cylinder 81 will be preferentially compressed; When a gap appears between the bottom of the external teeth 10 and the top of the lower die 3, the air pressure inside the telescopic cylinder 81 is sufficient to compress the second spring 88 through the sealing plate 87. At this time, the upper and lower chambers of the telescopic cylinder 81 are connected, and the alcohol and gas are evenly sprayed through the first metal tube 82 to the gap. After the inductor 86 detects that the alcohol content meets the standard, the arc generator 85 is started, and the generated arc will ignite the alcohol, and its volume expands, so as to better prop up the external teeth 10 to rise. Due to the restriction of the lifting assembly 9, the external teeth 10 rise in a vertical state, further avoiding excessive friction between the external teeth 10 and the lower die 3, thus causing defective products; During the process of the bottom plate 71 returning to its initial position, the telescopic cylinder 81 will be stretched, creating a negative pressure inside it. The pressure difference causes the elastic one-way valve installed on the telescopic cylinder 81 to open, thereby compensating for the pressure inside it. When the telescopic cylinder 81 is fully extended, the external air pressure is not sufficient to push and open the elastic component inside the elastic one-way valve. Therefore, the inside of the telescopic cylinder 81 remains in a negative pressure state. However, at this time, the metal tube 83 is in communication with the inside of the telescopic cylinder 81, and the solenoid valve inside it opens. The alcohol tank 84 infuses atomized alcohol into the inside of the telescopic cylinder 81 again. Furthermore, it compensates for the pressure difference between the inside of the telescopic cylinder 81 and the normal air pressure. At the bottom of the fixed end of the telescopic cylinder 81, there is also a notch for the air to circulate for the movement of its telescopic end, which enables the telescopic cylinder 81 to reciprocate better and perform alcohol pressurization and spraying.

[0021] As Figures 1 - 3 shown, the first spring 72 is wound around the top of the guide shaft 75. The bearing plate 73 is movably sleeved on the outer periphery of the guide shaft 75. The top of the limit plate 74 is closely attached to the bottom of the lower mold 3.

[0022] Adopting the above solution: Since the first spring 72 is wound around the outer periphery of the guide shaft 75 and the bearing plate 73 is sleeved on the guide shaft 75, when the bottom plate 71 rises, the first spring 72 is compressed but does not bend. Its top will exert a uniform thrust on the bearing plate 73, thereby driving the limit plate 74 to closely adhere to the bottom of the lower mold 3 through the bearing plate 73. When the bearing plate 73 slides on the outer periphery of the guide shaft 75, it can also prevent the limit plate 74 from tilting, which may cause the lifting assembly 9 at the top to not smoothly support and lift the external teeth 10. Further, it improves the stability of the device during operation.

[0023] As Figures 1 - 8 shown, the lifting assembly 9 includes telescopic rods 91 installed circumferentially and equiangularly on the top of the bearing plate 73. The telescopic ends of each telescopic rod 91 are elastically connected to the top of the bearing plate 73 through a tension spring 94. The top of each telescopic rod 91 is slidably installed with a lifting plate 92. The tops of each lifting plate 92 are commonly connected in series through a snap ring 93. The inner side of the lifting plate 92 and the edge of the top of the guide shaft 75 are chamfered and adapted to each other.

[0024] Adopting the above solution: When the guide shaft 75 rises, its chamfered part closely adheres to the chamfered part of the lifting plate 92, and then it can push the lifting plate 92 to slide on the top of the telescopic rod 91, and the snap ring 93 is expanded; Until the outer side of the lifting plate 92 abuts against the inner wall of the lower die 3, the upward movement of the guide shaft 75 drives the lifting plate 92 to rise, and the telescopic rod 91 extends. At this time, a gap appears between the lower die 3 and the external teeth 10 for alcohol to enter. There are several lifting plates 92 that evenly abut against the inner wall of the lower die 3, which causes the upward force applied to the lower die 3 to be evenly distributed at the ends of each lifting plate 92, thereby preventing the external teeth 10 from tilting when rising and causing scratches.

[0025] As Figures 1 - 8 shown, the outer end of the lifting plate 92 is made of copper and is arc-shaped. The second spring 88 is connected to the bottom of the telescopic rod 91, and the second spring 88 always abuts against the sealing plate 87 through the telescopic rod 91 to seal the two chambers inside the telescopic cylinder 81.

[0026] Adopting the above solution: The strength of copper is weaker than that of other metal materials and it has plasticity. The part of the lifting plate 92 made of copper is polished into an arc shape, which ensures that when the lifting plate 92 contacts the inner wall of the external teeth 10, it will not cause scratches. After long-term operation, even if it deforms, it can be reshaped manually, further reducing the losses generated during the operation of the device.

[0027] As Figures 1 - 7 shown, the cleaning assembly 6 includes an air storage box 61 installed on the top of the carrier plate 73. An accompanying ring 62 is movably clamped on the outside of the air storage box 61. The inside of the air storage box 61 is connected to a bellows 65 installed on the top of the carrier plate 73 through a trachea 64. A number of conduits 63 are circumferentially and equiangularly penetrated through the outer circumference of the accompanying ring 62, and the conduits 63 are connected to the air storage box 61.

[0028] The conduit 63 is made of carbon fiber composite material, and a notch is obliquely arranged on the outside of the conduit 63.

[0029] The top of the bellows 65 is connected to the bottom of the chamfered part of the guide shaft 75. The inner side of the bellows 65 closely adheres to the outer circumference of the guide shaft 75. The bellows 65 is located inside the tension spring 94.

[0030] Adopting the above solution: When the external teeth 10 are separated from the lifting assembly 9, the second hydraulic cylinder 5 retracts to the initial position, and the bottom plate 71 and the guide shaft 75 descend synchronously. However, since the first spring 72 still abuts against the limiting plate 74 through the carrier plate 73 to closely adhere to the bottom of the lower die 3 and the position of the carrier plate 73 is fixed, the chamfered part of the guide shaft 75 will squeeze the bellows 65, causing the air inside it to flow through the trachea 64 and the air storage box 61 into the conduit 63, and the air will finally be sprayed onto the lower die 3 through the inclined notch on the conduit 63; The descending speed of the guiding shaft 75 increases, which also increases the flow rate of the air ejected from the notch. The inclined notch design enables the air to drive the follower ring 62 and each conduit 63 to rotate, so that the discharged air can better blow onto the lower die 3. Further, it accelerates the drying of the water vapor generated by the ignition of alcohol, and can also remove the substances generated by evaporation. Under the action of the wind, the heat generated by the combustion of alcohol is quickly carried away, thereby avoiding the deformation of the lower die 3 due to overheating during long-term operation.

[0031] The working principle and usage process of the present invention: After the hydraulic cylinder 1 is started, it drives the upper die 2 and cooperates with the lower die 3 to perform fine blanking work on the external teeth 10; After the fine blanking work is completed, the hydraulic cylinder 2 drives the bottom plate 71 to rise. The bottom plate 71 drives the bearing plate 73 and the limit plate 74 to rise through the first spring 72. The limit plate 74 is closely attached to the bottom of the lower die 3, so that the bottom of the telescopic cylinder 81 and the bearing plate 73 are in a fixed state. The hydraulic cylinder 2 continues to extend, and the guiding shaft 75 rises to push the lifting plate 92 to slide on the top of the telescopic rod 91; Until the outside of the lifting plate 92 abuts against the inner wall of the lower die 3, the rising of the guiding shaft 75 drives the lifting plate 92 to rise, and the telescopic rod 91 extends, and a gap appears in the lower die 3 for alcohol to enter. At the same time, the rising of the bottom plate 71 will also compress the telescopic cylinder 81. The movable end of the telescopic cylinder 81 preferentially seals the connection of the second metal tube 83, so that the alcohol in the alcohol tank 84 no longer enters the inside of the telescopic cylinder 81 through the second metal tube 83. After each connection with the telescopic cylinder 81, the alcohol tank 84 will infuse 5 milliliters of alcohol into its inside through the second metal tube 83. When the telescopic cylinder 81 is compressed, the gas volatilized from the alcohol previously existing in the telescopic cylinder 81 will be preferentially compressed; When a gap appears between the bottom of the external teeth 10 and the top of the lower die 3, the air pressure inside the telescopic cylinder 81 is sufficient to compress the second spring 88 through the sealing plate 87. At this time, the upper and lower chambers of the telescopic cylinder 81 are connected, and the alcohol and gas are evenly sprayed to the gap through the first metal tube 82. After the sensor 86 detects that the alcohol content reaches the standard, the arc generator 85 is started, and the generated arc ignites the alcohol, and its volume expands to push the external teeth 10 to rise; After the external teeth 10 are disengaged from the lifting assembly 9, the second hydraulic cylinder 5 retracts to its initial position, and the bottom plate 71 and the guide shaft 75 descend synchronously. However, since the first spring 72 still props up the limit plate 74 against the bottom of the lower mold 3 through the bearing plate 73 and the position of the bearing plate 73 is fixed, the chamfered part of the guide shaft 75 will squeeze the bellows 65, causing the air inside it to flow into the conduit 63 through the air pipe 64 and the air storage box 61. Eventually, the air will be sprayed onto the lower mold 3 through the inclined notches on the conduit 63, accelerating the drying of the incompletely evaporated alcohol and also removing the substances generated by evaporation.

[0032] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0033] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fine-punching die for the outer teeth of an electric recliner for a car seat, comprising a hydraulic cylinder (1) and an upper die (2) mounted on the output end of the hydraulic cylinder (1), characterized in that: Also includes a base (4); A lower mold (3) mounted on the top of a base (4); A second hydraulic cylinder (5) disposed on the top of the base (4); A limit assembly (7) mounted on the output end of the second hydraulic cylinder (5), the limit assembly (7) comprising a bottom plate (71) mounted on the output end of the second hydraulic cylinder (5), a guide shaft (75) being mounted on the top of the bottom plate (71), a bearing plate (73) being elastically connected to the top of the bottom plate (71) via a first spring (72), and a limit plate (74) being fixedly connected to the outer periphery of the bearing plate (73); A cleaning assembly (6) mounted on a carrier plate (73) External teeth (10) placed on the lower mold (3); A pressurizing assembly (8) mounted at equal angles in an annular direction on the top of the bottom plate (71); The pressurizing assembly (8) comprises a telescopic cylinder (81) connected between a bottom plate (71) and a bearing plate (73); the interior of the telescopic cylinder (81) is divided into two upper and lower independent chambers, which are respectively connected to a metal tube 1 (82) and a metal tube 2 (83); the end of the metal tube 2 (83) is connected to an alcohol tank (84); the end of the metal tube 1 (82) is connected to a limit plate (74); an arc generator (85) and a sensor (86) are installed on the bearing plate (73); a sealing plate (87) is provided between the two chambers; the top of the sealing plate (87) is connected to a lifting assembly (9) via a spring 2 (88); The hydraulic cylinder 2 (5) extends and supports the bottom plate (71) and the guide shaft (75) to rise, and the guide shaft (75) drives the lifting assembly (9) to be fixed to the inner wall of the outer tooth (10) and drives it to rise, and the bottom of the outer tooth (10) and the top of the lower mold (3) form a gap for connecting the end of the metal tube 1 (82).

2. The fine punching die for the outer teeth of the electric recliner of a car seat according to claim 1, characterized in that: The spring 1 (72) is wound around the top of the guide shaft (75), the bearing plate (73) is movably sleeved on the outer circumference of the guide shaft (75), and the top of the limiting plate (74) is tightly attached to the bottom of the lower mold (3).

3. The fine punching die for the outer teeth of the electric recliner of the automobile seat according to claim 2, characterized in that: The alcohol tank (84) is fixedly mounted on the bottom of the bearing plate (73), a solenoid valve is arranged inside the metal tube (83), and a flexible one-way valve is arranged on the telescopic cylinder (81).

4. The fine punching die for the outer teeth of the electric recliner of a car seat according to claim 3, characterized in that: The lifting assembly (9) comprises telescopic rods (91) mounted at equiangular angles in the annular direction on the top of the bearing plate (73), the telescopic ends of each telescopic rod (91) being elastically connected to the top of the bearing plate (73) via a tension spring (94), a lifting plate (92) being slidably mounted on the top of each telescopic rod (91), the tops of each lifting plate (92) being connected in series via a retaining spring (93), and the inner side of the lifting plate (92) and the edge of the top of the guide shaft (75) being chamfered and matched.

5. The fine punching die for the outer teeth of the electric recliner of a car seat according to claim 4, characterized in that: The outer end of the lifting plate (92) is made of copper and is in an arc shape. The second spring (88) is connected to the bottom of the telescopic rod (91). The second spring (88) always supports the sealing plate (87) through the telescopic rod (91) to seal the two chambers inside the telescopic cylinder (81).

6. The fine punching die for the outer teeth of the electric recliner of the automobile seat according to claim 5, characterized in that: The cleaning assembly (6) comprises an air storage box (61) mounted on the top of a carrier plate (73); a travelling ring (62) is movably connected to the outside of the air storage box (61); the inside of the air storage box (61) is connected to a bellows (65) mounted on the top of the carrier plate (73) via an air pipe (64); a plurality of conduits (63) are circumferentially penetrated at equal angles on the outer circumference of the travelling ring (62); and the conduits (63) are connected to the air storage box (61).

7. The fine punching die for the outer teeth of the electric recliner of a car seat according to claim 6, characterized in that: The top of the bellows (65) is connected to the bottom of the chamfered portion of the guide shaft (75), the inner side of the bellows (65) is in close contact with the outer circumference of the guide shaft (75), and the bellows (65) is located in the inner ring of the tension spring (94).

8. The fine punching die for the outer teeth of the electric recliner of a car seat according to claim 7, characterized in that: The conduit (63) is made of a carbon fiber composite material, and a notch is obliquely arranged on the outer side of the conduit (63).

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