Stamping die and stamping method for left and right A column inner plates of automobile

Abstract

The invention provides a stamping die and a stamping method for inner plates of left and right columns A of an automobile, and belongs to the technical field of stamping die, the stamping die for the inner plates of the left and right columns A of the automobile comprises a frame assembly; the mold main body comprises an upper mold, a lower mold and a model groove, the upper mold and the lower mold are both arranged in the frame assembly, the upper mold and the lower mold are arranged in a staggered mode, and the model groove is formed in the upper mold and the lower mold; the number of the sealing assemblies is two, and each sealing assembly comprises a sealing pressing block, a sealing groove, an extrusion groove, an extrusion block, a liquid outlet hole and a reset component; by using the device, along with the inflow of the sealing liquid, the sealing liquid forms a liquid film for preventing the temperature from escaping in the sealing groove, so that the temperature is prevented from escaping to a certain extent, the deviation between the product temperature and the target temperature is not too large, and the product quality is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of stamping dies, and in particular relates to a stamping die and a stamping method for inner panels of left and right A-pillars of an automobile. Background Art

[0002] The stamping die for the inner panels of the left and right A-pillars of automobiles is a crucial process equipment in the automobile manufacturing process. It is mainly used to produce the key component of the inner panels of the A-pillars of automobiles. The inner panel of the A-pillar is located at the intersection of the front door and the roof of the car. It undertakes the important tasks of supporting the roof, fixing the front windshield and enhancing the structural strength of the car body. The design and manufacture of the stamping die directly affect the quality and performance of the inner panel of the A-pillar, and then affect the safety and comfort of the whole vehicle. The stamping die usually consists of an upper die and a lower die. The upper die is responsible for applying pressure, and the lower die provides support and positioning. The mold material is generally selected from high-strength, wear-resistant alloy steel to ensure that it can maintain stable performance under long-term, high-load working conditions. The surface of the mold is finely processed to ensure that the surface of the stamped A-pillar inner panel is smooth and defect-free. During the stamping process, the raw material (usually a high-strength steel plate) is fed into the mold, and a huge pressure is applied by a hydraulic press or a mechanical press to cause the steel plate to undergo plastic deformation according to the shape of the mold, and finally form the required shape of the inner panel of the A-pillar. The stamping process requires precise control of multiple parameters such as pressure, speed and temperature to ensure product quality.

[0003] In the prior art, when the upper and lower molds of the inner panels of the left and right A-pillars of a car are closed, there is a certain gap between the upper mold and the lower mold. The temperature during the stamping process of the product is easy to dissipate from the gap, resulting in a large deviation between the product temperature and the target temperature. The temperature change makes it impossible to guarantee the product quality. Summary of the invention

[0004] The purpose of the present invention is to provide a stamping die and a stamping method for the inner panels of the left and right A-pillars of an automobile, aiming to solve the problem in the prior art that when the upper and lower dies of the inner panels of the left and right A-pillars of an automobile are closed, there is a certain gap between the upper die and the lower die, and the temperature of the product during the stamping process is easily dissipated from the gap, resulting in a large deviation between the product temperature and the target temperature, and the temperature change causes the product quality to be unable to be guaranteed.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A stamping die for inner panels of left and right A-pillars of an automobile, comprising:

[0007] Frame components;

[0008] A mold body, the mold body comprising an upper mold, a lower mold and a mold groove, the upper mold and the lower mold are both arranged in a frame assembly, the upper mold and the lower mold are staggered, and the mold groove is opened in the upper mold and the lower mold;

[0009] A sealing assembly, wherein the sealing assembly is provided with two groups, each group of the sealing assembly comprises a sealing block, a sealing groove, an extrusion groove, an extrusion block, a liquid outlet and a reset component, the liquid outlet is provided with a plurality of holes, the reset component is provided with two groups, the sealing groove is provided in the lower mold, the sealing block is fixedly connected to the lower surface of the upper mold, the sealing block is slidably connected in the sealing groove, the extrusion groove is provided in the inner wall of the sealing groove, the extrusion block is slidably connected in the extrusion groove through two groups of reset components, and the plurality of liquid outlets are provided in the extrusion block.

[0010] As a preferred solution of the present invention, each group of the reset components includes an elastic groove, a slide plate, a second slide rod and a spring, the elastic groove is opened on the inner wall of one side of the extrusion groove, the slide plate is fixedly connected to one side end of the extrusion block, the second slide rod is fixedly connected in the elastic groove, the second slide rod is slidably connected in the slide plate, the spring is fixedly connected to the inner wall of the elastic groove and the surface of the slide plate, and the spring is sleeved on the circumferential surface of the second slide rod.

[0011] As a preferred solution of the present invention, the frame assembly includes a side plate, a first sliding rod and a limiting sleeve, the side plates are provided with two, the first sliding rod and the limiting sleeve are provided with multiple, the multiple first sliding rods are fixedly connected to the close ends of the two side plates, and the multiple limiting sleeves are respectively fixedly connected to the circumferential surfaces of the multiple first sliding rods.

[0012] As a preferred solution of the present invention, two groups of infusion components are provided in the lower mold, each group of the infusion components includes a storage tank, an air pressure plate, an air pressure channel and an infusion channel, the storage tank is opened in the lower mold, the storage tank is connected to the extrusion tank, the air pressure plate is slidably connected to the inner wall of the storage tank, the air pressure channel and the infusion channel are both opened in the lower mold, and the air pressure channel and the infusion channel are both connected to the storage tank.

[0013] As a preferred solution of the present invention, a first control valve and a second control valve are installed in the lower mold, the first control valve is connected to the air pressure channel, and the second control valve is connected to the infusion channel.

[0014] As a preferred solution of the present invention, recovery grooves are provided in the upper mold and the lower mold.

[0015] As a preferred solution of the present invention, two injection grooves are provided in the upper mold and the lower mold, and raw material guns are slidably connected in the two injection grooves. A three-way pipe is fixedly connected in the two raw material guns, and a raw material pipe is fixedly connected to one end of the three-way pipe.

[0016] As a preferred solution of the present invention, a lifting mechanism is provided on the upper side of the upper mold, and the lifting mechanism includes a driving assembly and multiple groups of lifting assemblies, each group of the lifting assemblies includes a U-shaped frame, an H-shaped block, a screw and a gear, the U-shaped frame is fixedly connected to the upper end of the upper mold, the H-shaped block is slidably connected in the U-shaped frame, the screw is rotatably connected in the U-shaped frame, the screw is threadedly connected to the H-shaped block, and the gear is fixedly connected to the upper end of the screw, the driving assembly includes a fixed frame, a motor and a rack, the fixed frame is provided with two racks meshing and transmission connected to the circumferential surface of multiple gears, the two fixed frames are fixedly connected to the surface of one of the U-shaped frames, the motor is fixedly connected to the surfaces of the two fixed frames, and the output end of the motor is fixed to the upper end of one of the gears.

[0017] As a preferred solution of the present invention, the two raw material guns are both rotatably connected with connecting rods, and the two connecting rods are respectively fixed to the surfaces of the plurality of H-shaped blocks.

[0018] A stamping method for a stamping die for inner panels of left and right A-pillars of an automobile, comprising the following steps:

[0019] S1, control the upper mold and the lower mold to slide to a position close to the closed position, control the lifting mechanism to operate, the lifting mechanism indirectly drives the two raw material guns to slide into the two injection slots respectively, and inputs the stamping raw materials into the two model slots respectively through the raw material pipe, the three-way pipe and the raw material gun, and continues to control the movement of the upper mold and the lower mold to make the upper mold and the lower mold completely closed, and the stamping of the raw materials is completed;

[0020] S2, when the upper mold and the lower mold slide to be completely closed, the sealing block slides into the sealing groove, and the sealing block squeezes the extrusion block while sliding, and squeezes the extrusion block into the extrusion groove, and the sealing liquid in the extrusion groove flows out from the liquid outlet hole in the extrusion block, and the sealing liquid flows into the sealing groove and contacts the surface of the sealing block, so that the upper mold and the lower mold are sealed, and part of the overflowed solution flows into the recovery tank;

[0021] S3. After the stamping is completed, the upper mold and the lower mold are reset, the extrusion block is reset by the reset component, the air pressure plate is moved up and the sealing liquid is squeezed by air pressure, and the sealing liquid stored in the storage tank is replenished into the extrusion tank for subsequent stamping.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. In this scheme, by using this device, the extrusion block squeezes the sealing liquid in the extrusion groove, so that the sealing liquid flows into the sealing groove from the liquid outlet. As the sealing liquid flows in, the sealing liquid forms a liquid film in the sealing groove to block the temperature dissipation, which blocks the temperature dissipation to a certain extent, so that the product temperature will not deviate too much from the target temperature, thereby ensuring the product quality.

[0024] 2. In this solution, the two limit sleeves on the upper side are arranged on the right side of the upper mold, and the two limit sleeves on the lower side are arranged on the left side of the lower mold. The limit sleeves are set to limit the upper mold and the lower mold to prevent them from moving excessively and damaging the upper mold and the lower mold.

[0025] 3. In this scheme, the sealing liquid in the storage tank is squeezed into the extrusion tank. When the sealing liquid in the storage tank is low, the hydraulic cylinder creates negative pressure on the lower side of the storage tank. The negative pressure moves the air pressure plate downward, and the sealing liquid is added to the storage tank through the infusion channel to quickly replenish the sealing liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0027] Figure 1 It is a first perspective stereogram of the present invention;

[0028] Figure 2 It is a second viewing angle stereogram of the present invention;

[0029] Figure 3 For the present invention Figure 2 A partial enlarged view of the middle A;

[0030] Figure 4 It is a cross-sectional view from a first perspective of the present invention;

[0031] Figure 5 is a cross-sectional view from a second viewing angle of the present invention;

[0032] Figure 6 For the present invention Figure 5 A partial enlarged view of point B in the middle;

[0033] Figure 7 For the present invention Figure 6 A partial enlarged view of point C in the middle;

[0034] Figure 8 is a three-dimensional diagram of the upper mold described in the present invention;

[0035] Fig. 9 is a three-dimensional diagram of the lower mold described in the present invention;

[0036] Fig.10 The figure is a flowchart of the use of the present invention.

[0037] In the figure: 1. side plate; 2. first slide bar; 3. limit sleeve; 4. upper mold; 5. lower mold; 6. U-shaped frame; 7. H-shaped block; 8. screw; 9. gear; 10. rack; 11. fixed frame; 12. motor; 13. three-way pipe; 14. raw material pipe; 15. raw material gun; 16. connecting rod; 17. model groove; 18. injection groove; 19. sealing block; 20. sealing groove; 21. extrusion groove; 22. extrusion block; 23. elastic groove; 24. slide plate; 25. second slide bar; 26. spring; 27. recovery groove; 28. storage groove; 29. ​​air pressure plate; 30. air pressure channel; 31. first control valve; 32. infusion channel; 33. second control valve. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] Example 1

[0042] See also Figure 1-Figure 10 , the present invention provides the following technical solutions:

[0043] A stamping die for inner panels of left and right A-pillars of an automobile, comprising:

[0044] Frame components;

[0045] The mold body includes an upper mold 4, a lower mold 5 and a mold groove 17. The upper mold 4 and the lower mold 5 are both arranged in the frame assembly. The upper mold 4 and the lower mold 5 are staggered. The mold groove 17 is opened in the upper mold 4 and the lower mold 5;

[0046] The sealing assembly is provided with two groups, each group of sealing assemblies includes a sealing block 19, a sealing groove 20, an extrusion groove 21, an extrusion block 22, a liquid outlet and a reset component. There are multiple liquid outlets, and there are two groups of reset components. The sealing groove 20 is opened in the lower mold 5, the sealing block 19 is fixedly connected to the lower surface of the upper mold 4, the sealing block 19 is slidably connected in the sealing groove 20, the extrusion groove 21 is opened in the inner wall of the sealing groove 20, the extrusion block 22 is slidably connected in the extrusion groove 21 through two groups of reset components, and multiple liquid outlets are opened in the extrusion block 22.

[0047] In a specific embodiment of the present invention, a frame assembly is installed between two groups of hydraulic cylinders, and the two groups of hydraulic cylinders are respectively connected to an upper mold 4 and a lower mold 5. The two hydraulic cylinders respectively control the movement of the upper mold 4 and the lower mold 5. The upper mold 4 slides on the circumferential surface of the two first slide bars 2 located on the upper side, and the lower mold 5 slides on the circumferential surface of the two first slide bars 2 located on the lower side. After the stamping raw materials are added to the upper mold 4 and the lower mold 5, the raw materials are stamped and formed by extruding the upper mold 4 and the lower mold 5 toward each other. The temperature of the product during stamping and forming escapes from the gap between the upper mold 4 and the lower mold 5, and the product is sealed. The sealing assembly allows the sealing liquid to flow into between the upper mold 4 and the lower mold 5; when the upper mold 4 and the lower mold 5 move toward each other, the sealing pressing block 19 slides into the sealing groove 20, and the sealing pressing block 19 squeezes the extrusion block 22, causing the extrusion block 22 to slide to the bottom of the extrusion groove 21, and the extrusion block 22 squeezes the sealing liquid in the extrusion groove 21, so that the sealing liquid flows into the sealing groove 20 from the liquid outlet. As the sealing liquid flows in, the sealing liquid forms a liquid film in the sealing groove 20 to block the temperature dissipation, which blocks the temperature dissipation to a certain extent, so that the product temperature will not deviate too much from the target temperature, thereby ensuring the product quality.

[0048] Preferably, the density of the sealing liquid is greater than that of water, and the flow rate is less than that of water.

[0049] For details, please refer to Figure 1-Figure 10 Each set of reset components includes an elastic groove 23, a slide plate 24, a second slide bar 25 and a spring 26. The elastic groove 23 is opened on the inner wall of one side of the extrusion groove 21. The slide plate 24 is fixedly connected to one side end of the extrusion block 22. The second slide bar 25 is fixedly connected in the elastic groove 23. The second slide bar 25 is slidably connected in the slide plate 24. The spring 26 is fixedly connected to the inner wall of the elastic groove 23 and the surface of the slide plate 24. The spring 26 is sleeved on the circumferential surface of the second slide bar 25.

[0050] In this embodiment, when the sealing pressing block 19 slides out of the sealing groove 20, the elastic force of the spring 26 in the reset component causes the slide plate 24 to drive the extrusion block 22 to slide out of the extrusion groove 21, thereby resetting the extrusion block 22.

[0051] For details, please refer to Figure 1-Figure 10 The frame assembly includes a side plate 1, a first sliding bar 2 and a limiting sleeve 3. Two side plates 1 are provided, and multiple first sliding bars 2 and limiting sleeves 3 are provided. The multiple first sliding bars 2 are fixedly connected to the adjacent ends of the two side plates 1, and the multiple limiting sleeves 3 are respectively fixedly connected to the circumferential surfaces of the multiple first sliding bars 2.

[0052] In this embodiment: the frame assembly is composed of a side plate 1, a first sliding bar 2 and a limiting sleeve 3, the surfaces of the two first sliding bars 2 on the upper side are slidably connected to the upper mold 4, and the surfaces of the two first sliding bars 2 on the lower side are slidably connected to the lower mold 5, wherein the two limiting sleeves 3 on the upper side are arranged on the right side of the upper mold 4, and the two limiting sleeves 3 on the lower side are arranged on the left side of the lower mold 5, and the limiting sleeves 3 are arranged to limit the upper mold 4 and the lower mold 5 to prevent them from excessive movement and damage to the upper mold 4 and the lower mold 5.

[0053] For details, please refer to Figure 1-Figure 10 Two groups of infusion components are provided in the lower mold 5, each group of infusion components includes a storage tank 28, an air pressure plate 29, an air pressure channel 30 and an infusion channel 32, the storage tank 28 is opened in the lower mold 5, the storage tank 28 is connected to the extrusion tank 21, the air pressure plate 29 is slidably connected to the inner wall of the storage tank 28, the air pressure channel 30 and the infusion channel 32 are both opened in the lower mold 5, and the air pressure channel 30 and the infusion channel 32 are both connected to the storage tank 28.

[0054] In this embodiment: the infusion component is used to add sealing liquid to the extrusion groove 21. The air pressure channel 30 in the infusion component is connected to the hydraulic cylinder. The air pressure enters the storage groove 28 through the air pressure channel 30. The upper side of the storage groove 28 stores sealing liquid. The air pressure drives the air pressure plate 29 to move upward, and the sealing liquid in the storage groove 28 is squeezed into the extrusion groove 21. When the sealing liquid in the storage groove 28 is small, the hydraulic cylinder generates negative pressure on the lower side of the storage groove 28. The negative pressure causes the air pressure plate 29 to move downward, and the sealing liquid is added to the storage groove 28 through the infusion channel 32.

[0055] For details, please refer to Figure 1-Figure 10 A first control valve 31 and a second control valve 33 are installed in the lower mold 5 . The first control valve 31 is connected to the air pressure channel 30 , and the second control valve 33 is connected to the infusion channel 32 .

[0056] In this embodiment, the first control valve 31 is used to control the connection state of the air pressure channel 30 , and the second control valve 33 is used to control the connection state of the infusion channel 32 .

[0057] For details, please refer to Figure 1-Figure 10 A recovery groove 27 is provided in the upper mold 4 and the lower mold 5 .

[0058] In this embodiment, the recovery groove 27 is used to recover the sealing liquid overflowing from the sealing groove 20 .

[0059] For details, please refer to Figure 1-Figure 10 Two injection grooves 18 are provided in the upper mold 4 and the lower mold 5, and raw material guns 15 are slidably connected in the two injection grooves 18. The two raw material guns 15 are fixedly connected with three-way pipes 13, and one end of the three-way pipe 13 is fixedly connected with a raw material pipe 14.

[0060] In this embodiment: the raw materials required for stamping are added to the model groove 17 through the set injection groove 18, the three-way pipe 13 is connected to the raw material pipe 14, the raw material pipe 14 is connected to the equipment for inputting raw materials, and a certain length of bellows is provided at the connection between the three-way pipe 13 and the two raw material guns 15, and the bellows facilitates the adjustment of the direction of the raw material gun 15.

[0061] For details, please refer to Figure 1-Figure 10 A lifting mechanism is provided on the upper side of the upper mold 4, and the lifting mechanism includes a driving assembly and multiple lifting assemblies, each lifting assembly includes a U-shaped frame 6, an H-shaped block 7, a screw 8 and a gear 9, the U-shaped frame 6 is fixedly connected to the upper end of the upper mold 4, the H-shaped block 7 is slidably connected in the U-shaped frame 6, the screw 8 is rotatably connected in the U-shaped frame 6, the screw 8 is threadedly connected to the H-shaped block 7, and the gear 9 is fixedly connected to the upper end of the screw 8, the driving assembly includes a fixed frame 11, a motor 12 and a rack 10, the fixed frame 11 is provided with two racks 10 meshing and transmission connected to the circumferential surface of multiple gears 9, the two fixed frames 11 are fixedly connected to the surface of one of the U-shaped frames 6, the motor 12 is fixedly connected to the surfaces of the two fixed frames 11, and the output end of the motor 12 is fixed to the upper end of one of the gears 9.

[0062] In this embodiment: the lifting mechanism is used to control the movement of two raw material guns 15. When the motor 12 is running, it drives a gear 9 connected to its output end to rotate. Multiple gears 9 are connected through a rack 10 for meshing transmission. Multiple gears 9 rotate at the same time. When the gear 9 rotates, it drives the screw 8 to rotate. The screw 8 is threadedly matched with the H-shaped block 7. The rotation of the screw 8 drives the H-shaped block 7 to move, and the H-shaped block 7 drives the connecting rod 16 to move through the connecting rod 16.

[0063] For details, please refer to Figure 1-Figure 10 The two raw material guns 15 are both rotatably connected with connecting rods 16, and the two connecting rods 16 are respectively fixed on the surfaces of the multiple H-shaped blocks 7.

[0064] In this embodiment, after the raw material gun 15 slides out from the injection slot 18 , the raw material gun 15 rotates at a certain angle, which is convenient for maintenance of the raw material gun 15 , thereby increasing the service life of the raw material gun 15 .

[0065] The working principle and use process of the present invention: When the device is in use, first control the upper mold 4 and the lower mold 5 to slide to a position close to the closed position, control the operation of the lifting mechanism, and the lifting mechanism indirectly drives the two raw material guns 15 to slide into the two injection grooves 18 respectively, and the stamping raw materials are respectively input into the two model grooves 17 through the raw material pipe 14, the three-way pipe 13 and the raw material gun 15, and continue to control the movement of the upper mold 4 and the lower mold 5 to make the upper mold 4 and the lower mold 5 completely closed, and the stamping of the raw materials is completed; in the process of the upper mold 4 and the lower mold 5 sliding to complete closure, the sealing block 19 slides into the sealing groove 20, and the sealing block 19 squeezes the extrusion block 22 while sliding, and squeezes the extrusion block 22 into the extrusion groove 21, and the sealing liquid in the extrusion groove 21 is discharged from the liquid outlet hole in the extrusion block 22. The sealing liquid flows out, and flows into the sealing groove 20 and contacts the surface of the sealing pressing block 19, so that the upper mold 4 and the lower mold 5 are sealed, and part of the overflowed solution flows into the recovery groove 27; after the stamping is completed, the upper mold 4 and the lower mold 5 are reset, and the extrusion block 22 is reset by the reset component, and the air pressure plate 29 is moved up and squeezed by air pressure to squeeze the sealing liquid, and the sealing liquid stored in the storage tank 28 is replenished into the extrusion groove 21 for subsequent stamping; by using this device, the extrusion block 22 squeezes the sealing liquid in the extrusion groove 21, so that the sealing liquid flows into the sealing groove 20 from the liquid outlet. As the sealing liquid flows in, the sealing liquid forms a liquid film in the sealing groove 20 to block the temperature dissipation, which blocks the temperature dissipation to a certain extent, so that the product temperature will not deviate too much from the target temperature, thereby ensuring the product quality.

[0066] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A stamping die for the inner panels of the left and right A-pillars of an automobile, characterized in that: include: Frame components; A mold body, the mold body comprising an upper mold (4), a lower mold (5) and a mold groove (17), the upper mold (4) and the lower mold (5) are both arranged in a frame assembly, the upper mold (4) and the lower mold (5) are staggered, and the mold groove (17) is opened in the upper mold (4) and the lower mold (5); A sealing assembly, wherein the sealing assembly is provided in two groups, each group of the sealing assembly comprises a sealing block (19), a sealing groove (20), an extrusion groove (21), an extrusion block (22), a liquid outlet and a reset component, wherein the liquid outlet is provided in a plurality and the reset component is provided in two groups. The sealing groove (20) is provided in a lower mold (5), the sealing block (19) is fixedly connected to the lower surface of the upper mold (4), the sealing block (19) is slidably connected in the sealing groove (20), the extrusion groove (21) is provided in the inner wall of the sealing groove (20), the extrusion block (22) is slidably connected in the extrusion groove (21) via two groups of reset components, and the plurality of liquid outlets are provided in the extrusion block (22).

2. The stamping die for the inner panels of the left and right A-pillars of an automobile according to claim 1, characterized in that: Each group of the reset components comprises an elastic groove (23), a slide plate (24), a second slide bar (25) and a spring (26); the elastic groove (23) is opened on an inner wall of one side of the extrusion groove (21); the slide plate (24) is fixedly connected to a side end of the extrusion block (22); the second slide bar (25) is fixedly connected in the elastic groove (23); the second slide bar (25) is slidably connected in the slide plate (24); the spring (26) is fixedly connected to the inner wall of the elastic groove (23) and the surface of the slide plate (24); and the spring (26) is sleeved on the circumferential surface of the second slide bar (25).

3. The stamping die for the inner panels of the left and right A-pillars of an automobile according to claim 2, characterized in that: The frame assembly comprises a side plate (1), a first sliding rod (2) and a limiting sleeve (3), wherein two side plates (1) are provided, and a plurality of the first sliding rods (2) and the limiting sleeve (3) are provided, wherein the plurality of the first sliding rods (2) and the limiting sleeve (3) are fixedly connected to the adjacent ends of the two side plates (1), and the plurality of the limiting sleeves (3) are respectively fixedly connected to the circumferential surfaces of the plurality of the first sliding rods (2).

4. The stamping die for the inner panels of the left and right A-pillars of an automobile according to claim 3, characterized in that: Two groups of infusion components are arranged in the lower mold (5), and each group of infusion components comprises a storage tank (28), an air pressure plate (29), an air pressure channel (30) and an infusion channel (32). The storage tank (28) is arranged in the lower mold (5), the storage tank (28) is communicated with the extrusion tank (21), the air pressure plate (29) is slidably connected to the inner wall of the storage tank (28), the air pressure channel (30) and the infusion channel (32) are both arranged in the lower mold (5), and the air pressure channel (30) and the infusion channel (32) are both communicated with the storage tank (28).

5. The stamping die for the inner panels of the left and right A-pillars of an automobile according to claim 4, characterized in that: A first control valve (31) and a second control valve (33) are installed in the lower mold (5); the first control valve (31) is connected to the air pressure channel (30), and the second control valve (33) is connected to the liquid infusion channel (32).

6. The stamping die for the inner panels of the left and right A-pillars of an automobile according to claim 5, characterized in that: The upper mold (4) and the lower mold (5) are provided with recovery grooves (27).

7. The stamping die for the inner panels of the left and right A-pillars of an automobile according to claim 6, characterized in that: Two injection grooves (18) are provided in the upper mold (4) and the lower mold (5), and a raw material gun (15) is slidably connected in the two injection grooves (18), and a three-way pipe (13) is fixedly connected in the two raw material guns (15), and one end of the three-way pipe (13) is fixedly connected to the raw material pipe (14).

8. The stamping die for the inner panels of the left and right A-pillars of an automobile according to claim 7, characterized in that: A lifting mechanism is provided on the upper side of the upper mold (4), the lifting mechanism comprising a driving assembly and a plurality of lifting assemblies, each of the lifting assemblies comprising a U-shaped frame (6), an H-shaped block (7), a screw (8) and a gear (9), the U-shaped frame (6) being fixedly connected to the upper end of the upper mold (4), the H-shaped block (7) being slidably connected in the U-shaped frame (6), the screw (8) being rotatably connected in the U-shaped frame (6), the screw (8) being threadedly connected to the H-shaped block (7), and the gear (9) being fixedly connected to the upper end of the upper mold (4). Connected to the upper end of the screw rod (8), the driving assembly comprises a fixed frame (11), a motor (12) and a rack (10); the fixed frame (11) is provided with two racks (10) meshingly connected to the circumferential surface of a plurality of gears (9); the two fixed frames (11) are fixedly connected to the surface of one of the U-shaped frames (6); the motor (12) is fixedly connected to the surfaces of the two fixed frames (11); and the output end of the motor (12) is fixed to the upper end of one of the gears (9).

9. The stamping die for the inner panels of the left and right A-pillars of an automobile according to claim 8, characterized in that: The two raw material guns (15) are both rotatably connected with connecting rods (16), and the two connecting rods (16) are respectively fixed on the surfaces of a plurality of H-shaped blocks (7).

10. A stamping method for a stamping die for inner panels of left and right A-pillars of an automobile, using a stamping die for inner panels of left and right A-pillars of an automobile as claimed in any one of claims 1 to 9, characterized in that: The steps include: S1, controlling the upper mold (4) and the lower mold (5) to slide to a position close to the closed position, controlling the operation of the lifting mechanism, and indirectly driving the two raw material guns (15) to slide into the two injection slots (18) respectively, and respectively inputting the stamping raw materials into the two model slots (17) through the raw material pipe (14), the three-way pipe (13) and the raw material gun (15), and continuing to control the movement of the upper mold (4) and the lower mold (5), so that the upper mold (4) and the lower mold (5) are completely closed, and the stamping of the raw materials is completed; S2, during the process of the upper mold (4) and the lower mold (5) sliding to be completely closed, the sealing pressing block (19) slides into the sealing groove (20), and the sealing pressing block (19) squeezes the squeezing block (22) while sliding, and squeezes the squeezing block (22) into the squeezing groove (21), and the sealing liquid in the squeezing groove (21) flows out from the liquid outlet hole in the squeezing block (22), and the sealing liquid flows into the sealing groove (20) and contacts the surface of the sealing pressing block (19), so that the upper mold (4) and the lower mold (5) are sealed, and part of the overflowed solution flows into the recovery tank (27); S3. After the stamping is completed, the upper mold (4) and the lower mold (5) are reset, the extrusion block (22) is reset by the reset component, the air pressure plate (29) is moved upward and the sealing liquid is squeezed by air pressure, and the sealing liquid stored in the storage tank (28) is replenished into the extrusion tank (21) for subsequent stamping.

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