Top-speed cooling type automobile safety part hot stamping equipment

Abstract

The invention relates to top-speed cooling type automobile safety part hot stamping equipment in the technical field of automobile production, and the top-speed cooling type automobile safety part hot stamping equipment comprises a hot stamping machine, the hot stamping machine comprises a support, a rack is arranged at the bottom of the support, an automobile safety part stamping die is arranged on the rack, and the automobile safety part stamping die comprises an upper die and a lower die; an upper mold cooling assembly is arranged on the outer side of the upper mold, the upper mold cooling assembly comprises an upper shell arranged on the outer side of the upper mold, a first cooling channel is formed in the upper shell, a lower mold cooling assembly is arranged on the outer side of the lower mold, the lower mold cooling assembly comprises a lower shell arranged on the outer side of the lower mold, and a second cooling channel is formed in the lower shell. The temperature difference of water on a flowing path is effectively reduced, the cooling efficiency is improved, product hardness fluctuation caused by the too large temperature difference of cooling water on the flowing path is effectively avoided, meanwhile, the automobile safety part can be sequentially cooled from the inner side to the outer side, the safety part product meets the requirements for impact resistance and energy absorption, and the product quality is high.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile processing, and particularly relates to a hot stamping device for automobile safety parts with extremely fast cooling speed. Background Art

[0002] Automobile safety parts refer to parts that are directly related to the safety performance of the vehicle and may pose serious safety hazards to vehicle occupants or road participants after failure, such as anti-collision steel beams, vehicle body skeletons, door reinforcement ribs, etc. on the vehicle body structure. The hot stamping technology for automobile safety parts is one of the core technologies in the field of automobile manufacturing in recent years. By heating it to austenitize at high temperature, and then quickly stamping and cooling in a mold to form martensite structure, the tensile strength can reach 1500 - 2000 MPa, far exceeding the strength of traditional cold stamping parts (usually 400 - 600 MPa). This ultra-high strength can effectively improve the collision performance of the whole vehicle and reduce the vehicle body weight.

[0003] Currently, after the automobile safety parts are formed in the mold, the water cooling method for the outside of the mold is usually adopted to cool the product. For example, in the prior art publication number CN217858422U, an automobile stamping die, etc. In the prior art, cooling water is conveyed into the condensation pipe wound around the outside of the mold through the water inlet pipe, and the water is discharged from the drain pipe after cooling the mold.

[0004] However, the following problems exist in the actual use of the prior art: the water temperature gradually rises during the flow of water, and due to the long flow path of the water, the part of the mold that exchanges heat with the water first has a high cooling efficiency due to the low water temperature, while the part of the mold that exchanges heat with the water later has a reduced cooling efficiency due to the rising water temperature, resulting in uneven cooling of the product, which is likely to cause problems such as hardness fluctuations of the parts, and uneven cooling is also likely to cause retained austenite in local areas of the product, leading to tissue differences in the product and exacerbating the springback problem of the product. Summary of the Invention

[0005] In order to solve the problems raised in the above background art, the present invention provides the following technical solutions:

[0006] A hot stamping device for automobile safety parts with extremely fast cooling speed, including a hot stamping machine, the hot stamping machine includes a bracket, a frame is provided at the bottom of the bracket, an automobile safety part stamping die is provided on the frame, and the automobile safety part stamping die includes an upper die and a lower die distributed up and down.

[0007] An upper die cooling assembly is provided outside the upper die, the upper die cooling assembly includes an upper outer shell provided outside the upper die, a cooling channel one is opened in the upper outer shell, and the cooling channel one surrounds the outside of the upper die to cool the upper die, thereby cooling the automobile safety parts.

[0008] A lower die cooling component is provided on the outer side of the lower die. The lower die cooling component includes a lower outer shell provided on the outer side of the lower die. A second cooling channel is formed inside the lower outer shell and surrounds the outer side of the lower die to cool the lower die, thereby cooling the automotive safety component.

[0009] Further, an upper die receiving cavity is formed at the bottom of the upper outer shell. The upper die is disposed inside the upper die receiving cavity, and the first cooling channel surrounds the outer side of the upper die receiving cavity.

[0010] The first cooling channel includes two groups of mirror-symmetrical upper flow channel groups, and each group of upper flow channel groups includes a plurality of L-shaped cooling flow channels 1. The horizontal portion of the L-shaped cooling flow channel 1 is disposed at the top of the upper die receiving cavity, and the vertical portion of the L-shaped cooling flow channel 1 is disposed on the outer side of the upper die receiving cavity. The first cooling channel further includes two water inlet channels 1 and a water outlet channel 1 disposed on the outer side of the bottom of the upper die receiving cavity. One end of each water inlet channel 1 and a plurality of L-shaped cooling flow channels 1 at its bottom are communicated through a connecting flow channel 1, and the water outlet channel 1 is communicated with the other ends of the plurality of L-shaped cooling flow channels 1.

[0011] Further, two first water inlet pipes communicated with the two first water inlet channels are fixed to the rear end of the upper outer shell. A first drain pipe is provided at the bottom of each first water inlet pipe, and the two first drain pipes are both communicated with the first water outlet channel. Cooling water is injected into the first cooling channel through the first water inlet pipe to cool the automotive safety component from the inside to the outside and then discharged through the first drain pipe.

[0012] Further, the top of the upper die and the inner top end of the upper die receiving cavity are connected by a plurality of springs. When the mold is opened, the upper die extends out of the bottom of the upper die receiving cavity under the elastic force of the springs.

[0013] Further, a connecting member is provided between the inner top end of the upper die receiving cavity and the top end of the upper die, and the connecting member is disposed between the plurality of springs. The connecting member includes an outer plate, an intermediate plate, and an inner plate distributed in sequence from top to bottom. The top end of the outer plate is fixedly connected to the inner top end of the upper die receiving cavity. The top end of the intermediate plate extends into the outer plate and is slidably connected to the outer plate. The top end of the inner plate extends into the intermediate plate and is slidably connected to the intermediate plate, and the bottom end of the inner plate is fixedly connected to the top end of the upper die.

[0014] Further, the connecting member further includes a cylinder fixed to the top end of the inner plate. There are a plurality of cylinders and they are evenly distributed. A plurality of circular holes are provided at the bottom end of each L-shaped cooling flow channel 1. Each circular hole is respectively disposed at the top of each cylinder, and the cylinder matches the circular hole. When the mold is closed, the connecting member contracts, and the cylinder is inserted into the circular hole to block the circular hole.

[0015] Further, a lower die accommodating cavity is formed at the top of the lower outer shell, the lower die is disposed inside the lower die accommodating cavity, and a second cooling channel is wound around the outside of the lower die accommodating cavity; the second cooling channel includes two groups of mirror-symmetrical downstream channel groups, and each group of downstream channel groups includes a plurality of L-shaped cooling channels II, the horizontal portion of the L-shaped cooling channel II is disposed at the bottom of the lower die accommodating cavity, and the vertical portion of the L-shaped cooling channel II is disposed outside the lower die accommodating cavity; the second cooling channel further includes two water inlet channels II and a water outlet channel II disposed outside the top of the lower die accommodating cavity, one end of each water inlet channel II and a plurality of L-shaped cooling channels II at its top are communicated through a connecting channel II, and the water outlet channel II is communicated with the other ends of the plurality of L-shaped cooling channels II.

[0016] Further, two water inlet pipes II respectively communicated with the water inlet channels II are fixed at the rear end of the lower outer shell, a drain pipe II is disposed at the top of each water inlet pipe II, and the two drain pipes II are both communicated with the water outlet channel II. The cooling water is injected into the second cooling channel through the water inlet pipes II to cool the automotive safety part from the inside to the outside and then discharged through the drain pipes II.

[0017] Further, a hydraulic cylinder for driving the upper outer shell to lift is fixed at the top of the bracket to drive the upper die to lift for mold opening and closing.

[0018] Further, a loading manipulator and an unloading manipulator are respectively fixed on both sides of the hot stamping machine, and a loading conveyor and an unloading conveyor are respectively installed on both sides of the hot stamping machine; the loading manipulator is disposed on the top of the loading conveyor and is used for sending the high-temperature automotive safety part conveyed on the loading conveyor into the automotive safety part stamping die for hot stamping processing; the unloading manipulator is disposed on the top of the loading conveyor and is used for sending the processed automotive safety part to the unloading conveyor and then transporting it to the next working station.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] By arranging a cooling component on the mold, the upper and lower channel groups of the cooling component are divided into a plurality of L-shaped cooling channels, and cooling water is injected into each L-shaped cooling channel. On the one hand, the flow path of the cooling water is shortened, the temperature difference of the water on the flow path is effectively reduced, the cooling efficiency of the mold is improved, so as to realize the rapid cooling of the safety part, and at the same time, the product hardness fluctuation caused by too large temperature difference on the flow path of the cooling water is effectively avoided; on the other hand, the orderly cooling of the safety part in the mold from the inside to the outside can be realized, so that the inner core stress-bearing part of the safety part preferentially completes the martensite transformation to obtain high strength, while the outer side is cooled relatively slowly to retain a certain plasticity, so that the safety part takes into account the requirements of impact resistance and energy absorption.

[0021] Meanwhile, the temperature of the cooling water in the L-shaped cooling channel 1 on the upper die increases after heat exchange with the safety component, causing the pressure in the L-shaped cooling channel 1 to increase, thereby applying a downward pressure on the upper die, enabling pressure holding on the formed automotive safety component in cooperation with the hydraulic cylinder during cooling, effectively avoiding the problem of dimensional deviation of the safety component due to cooling springback, and improving product quality. Brief Description of the Drawings

[0022] Figure 1 is the overall structure diagram of the present invention;

[0023] Figure 2 is the front structure diagram of the hot stamping machine of the present invention;

[0024] Figure 3 is the back structure diagram of the hot stamping machine of the present invention;

[0025] Figure 4 is the structure diagram of the automotive safety component stamping die, upper die cooling component and lower die cooling component of the present invention;

[0026] Figure 5 is the main view cross-sectional view of the upper die cooling component of the present invention;

[0027] Figure 6 is the cross-section of the upper die cooling component of the present invention Figure 1 ;

[0028] Figure 7 is the cross-section of the upper die cooling component of the present invention Figure 2 ;

[0029] Figure 8 is the cross-section of the upper die cooling component of the present invention Figure 3 ;

[0030] Figure 9 is the cross-sectional view of the connecting piece of the present invention;

[0031] Figure 10 is the cross-section of the lower die cooling component of the present invention Figure 1 ;

[0032] Figure 11 is the cross-section of the lower die cooling component of the present invention Figure 2 ;

[0033] Figure 12 is the cross-section of the lower die cooling component of the present invention Figure 3 ;

[0034] Figure 13 is the cross-section of the lower die cooling component of the present invention Figure 4 ;

[0035] Figure 14 is the working schematic diagram of the automotive safety component stamping die, upper die cooling component and lower die cooling component of the present invention.

[0036] In the accompanying drawings, the list of component names represented by each reference numeral is as follows:

[0037] 1. Hot stamping machine; 2. Bracket; 3. Frame; 4. Stamping die for automotive safety parts; 41. Upper die; 42. Lower die;

[0038] 5. Upper die cooling assembly; 51. Upper outer shell; 52. Upper die accommodating cavity; 53. First L-shaped cooling channel; 54. First water inlet channel; 55. First water inlet channel; 56. First water outlet channel; 57. First water inlet pipe; 58. First drain pipe; 59. Connector; 510. Spring; 511. Round hole;

[0039] 591. Outer plate; 592. Intermediate plate; 593. Inner plate; 594. Cylinder;

[0040] 6. Lower die cooling assembly; 61. Lower outer shell; 62. Lower die accommodating cavity; 63. Second L-shaped cooling channel; 64. Second water inlet channel; 65. Second connecting channel; 66. Second water outlet channel; 67. Second water inlet pipe; 68. Second drain pipe;

[0041] 7. Hydraulic cylinder; 8. Loading manipulator; 9. Unloading manipulator; 10. Loading conveyor; 11. Unloading conveyor. Detailed implementation manners

[0042] The preferred specific implementation manners for implementing the present invention are described in detail below, and a clear and complete description is made in combination with the accompanying drawings.

[0043] Please refer to Figures 1 - 14 , the present invention provides a hot stamping device for automotive safety parts with extremely fast cooling, including a hot stamping machine 1. A loading manipulator 8 and an unloading manipulator 9 are respectively fixed on both sides of the hot stamping machine 1, and a loading conveyor 10 and an unloading conveyor 11 are respectively installed on both sides of the hot stamping machine 1. The loading manipulator 8 is arranged on the top of the loading conveyor 10, and the unloading manipulator 9 is arranged on the top of the loading conveyor 10;

[0044] The hot stamping machine 1 includes a bracket 2. A frame 3 is arranged at the bottom of the bracket 2. An automotive safety part stamping die 4 is arranged on the frame 3. The automotive safety part stamping die 4 includes an upper die 41 and a lower die 42 which are distributed up and down. A hydraulic cylinder 7 for driving the lifting of the upper outer shell 51 is fixed on the top of the bracket 2 to drive the lifting of the upper die 41 to perform mold opening and closing;

[0045] During processing, the high-temperature automotive safety component is conveyed by the feeding conveyor 10 to the feeding manipulator 8. The feeding manipulator 8 clamps and places the high-temperature automotive safety component into the lower die 42. Then, the hydraulic cylinder 7 drives the upper die 41 to move downward to close the die and perform hot stamping on the high-temperature automotive safety component. After processing, the die is opened, and the automotive safety component is clamped by the discharging manipulator 9 and placed on the discharging conveyor 11. The discharging conveyor 11 transports the automotive safety component to the next working station.

[0046] The stamped automotive safety component needs to be cooled within the die. Therefore, as Figures 2 - 4 shown, the present invention is provided with an upper die cooling assembly 5 outside the upper die 41, and a lower die cooling assembly 6 outside the lower die 42, which is used to cool the automotive safety component formed by hot stamping in the automotive safety component stamping die 4.

[0047] Specifically, as Figures 5 - 8 shown, the upper die cooling assembly 5 includes an upper outer shell 51 provided outside the upper die 41. The bottom of the upper outer shell 51 is provided with an upper die accommodation cavity 52. The upper die 41 is arranged inside the upper die accommodation cavity 52. The top of the upper die 41 is connected to the inner top end of the upper die accommodation cavity 52 by a plurality of springs 510. When the die is opened, the upper die 41 extends out of the bottom of the upper die accommodation cavity 52 under the elastic force of the springs 510. When the die is closed, the upper die 41 enters the upper die accommodation cavity 52 and compresses the springs 510. During the compression process of the springs 510, their elastic force gradually increases, realizing a gradually increasing pressure on the automotive safety component in the lower die 42, which helps the material to flow more uniformly and reduces the risks of uneven deformation, wrinkles or cracking caused by local stress concentration.

[0048] A cooling channel one is arranged inside the upper outer shell 51, and the cooling channel one surrounds the outside of the upper die accommodation cavity 52. The cooling channel one includes two groups of mirror-symmetrical upper flow channel groups, and each group of upper flow channel groups includes a plurality of L-shaped cooling channels one 53. The horizontal part of the L-shaped cooling channel one 53 is arranged at the top of the upper die accommodation cavity 52, and the vertical part of the L-shaped cooling channel one 53 is arranged outside the upper die accommodation cavity 52. The cooling channel one further includes two water inlet channels one 54 and a water outlet channel one 56 arranged outside the bottom of the upper die accommodation cavity 52. One end of each water inlet channel one 54 and the plurality of L-shaped cooling channels one 53 at its bottom are all communicated through a connecting channel one 55. The water outlet channel one 56 is communicated with the other ends of the plurality of L-shaped cooling channels one 53. One end of the L-shaped cooling channel one 53 is close to the inner side of the upper die 41, and the other end of the L-shaped cooling channel one 53 is close to the outer side of the upper die 41.

[0049] At the rear end of the upper outer shell 51, two first water inlet pipes 57 respectively communicating with two first water inlet channels 54 are fixed. At the bottom of each first water inlet pipe 57, a first drain pipe 58 is provided. The two first drain pipes 58 are both communicated with the first water outlet channel 56. Cooling water is injected into the first water inlet channel 54 through the first water inlet pipe 57. Then, the water enters each L-shaped cooling channel 53 through a plurality of first connecting channels 55 respectively. The water flows from one end of the L-shaped cooling channel 53 to the other end, realizing the cooling of the automotive safety component from the inside to the outside. Then, the water enters the first water outlet channel 56 and is finally discharged through the first drain pipe 58.

[0050] Next, as Figures 10 - 13 shown, the lower die cooling component 6 includes a lower outer shell 61 provided outside the lower die 42. A second cooling channel is defined inside the lower outer shell 61 and surrounds the outside of the lower die 42. At the top of the lower outer shell 61, a lower die receiving cavity 62 is defined. The lower die 42 is disposed inside the lower die receiving cavity 62, and the second cooling channel surrounds the outside of the lower die receiving cavity 62. The second cooling channel includes two groups of mirror-symmetrical downstream channel groups, and each group of downstream channel groups includes a plurality of L-shaped cooling channels 63. The horizontal part of the L-shaped cooling channel 63 is disposed at the bottom of the lower die receiving cavity 62, and the vertical part of the L-shaped cooling channel 63 is disposed outside the lower die receiving cavity 62. The second cooling channel further includes two second water inlet channels 64 and a second water outlet channel 66 disposed outside the top of the lower die receiving cavity 62. One end of each of the second water inlet channels 64 and a plurality of L-shaped cooling channels 63 at its top are communicated through a second connecting channel 65. The second water outlet channel 66 is communicated with the other ends of the plurality of L-shaped cooling channels 63. One end of the L-shaped cooling channel 63 is close to the inside of the lower die 42, and the other end of the L-shaped cooling channel 63 is close to the outside of the lower die 42.

[0051] At the rear end of the lower outer shell 61, two second water inlet pipes 67 respectively communicating with the second water inlet channels 64 are fixed. At the top of each second water inlet pipe 67, a second drain pipe 68 is provided. The two second drain pipes 68 are both communicated with the second water outlet channel 66. Cooling water is injected into the second water inlet channel 64 through the second water inlet pipe 67. Then, the water enters each L-shaped cooling channel 63 through a plurality of second connecting channels 65 respectively. The water flows from one end of the L-shaped cooling channel 63 to the other end, realizing the cooling of the automotive safety component from the inside to the outside. Then, the water enters the second water outlet channel 66 and is finally discharged through the second drain pipe 68.

[0052] Next, as Figure 5 and Figure 9As shown, a connecting member 59 is provided between the inner top end of the upper die accommodating cavity 52 and the top end of the upper die 41, and the connecting member 59 is arranged between a plurality of springs 510; the connecting member 59 includes an outer plate 591, an intermediate plate 592 and an inner plate 593 which are distributed in sequence from top to bottom. The top end of the outer plate 591 is fixedly connected to the inner top end of the upper die accommodating cavity 52. The top end of the intermediate plate 592 extends into the inner part of the outer plate 591 and is slidably connected to the outer plate 591. The top end of the inner plate 593 extends into the inner part of the intermediate plate 592 and is slidably connected to the intermediate plate 592, and the bottom end of the inner plate 593 is fixedly connected to the top end of the upper die 41.

[0053] The connecting member 59 further includes cylinders 594 fixed to the top end of the inner plate 593. There are a plurality of cylinders 594 and they are evenly distributed. A plurality of round holes 511 are provided at the bottom end of each L-shaped cooling channel 53. Each round hole 511 is respectively arranged at the top of each cylinder 594, and the cylinder 594 matches the round hole 511; when the die is closed, the upper die 41 drives the connecting member 59 to contract, so that the cylinder 594 is inserted into the round hole 511 to block the round hole 511.

[0054] The working principle of the present invention is as follows:

[0055] First, the automotive safety part is heated at high temperature to make it austenitized, and then the high-temperature automotive safety part is sent into the lower die 42. Then, the hydraulic cylinder 7 drives the upper housing 51 to drive the upper die 41 to move downward. When the upper die 41 contacts the lower die 42, the upper die 41 does not move and the upper housing 51 continues to move downward, so that the upper die 41 gradually enters the upper die accommodating cavity 52 and compresses the spring 510. The elastic force of the spring 510 gradually increases, and the elastic force is applied to the automotive safety part through the upper die 41, realizing a gradually increasing pressure on the safety part, which helps the material to flow more evenly, facilitates the preforming of the safety part, makes the strain distribution more uniform during subsequent forming, and reduces the risk of uneven deformation, wrinkles or cracking caused by local stress concentration;

[0056] During the process of the upper die 41 entering the upper die accommodating cavity 52, the outer plate 591, the intermediate plate 592 and the inner plate 593 contract until the die is completely closed. As Figure 14 shown, at this time, the upper die 41 contacts the outer plate 591, and the cylinder 594 is inserted into the round hole 511 to block the round hole 511. In actual use, in order to ensure the seal between the cylinder 594 and the round hole 511, a high-temperature resistant sealing ring can also be fixed on the outer wall of the cylinder 594 or the inner wall of the round hole 511 as required;

[0057] Closing the die realizes hot stamping processing of the high-temperature automotive safety part in the automotive safety part stamping die 4. Then, the stamped automotive safety part needs to be cooled in the die to form a martensite structure to improve the tensile strength. The cooling step is specifically as follows:

[0058] When the upper die 41 is cooled, cooling water is injected into the first water inlet channel 54 through the first water inlet pipe 57. Then, the water enters each L-shaped cooling channel 53 through a plurality of first connecting channels 55. The water flows from one end of the L-shaped cooling channel 53 to the other end, that is, the water flows from the inside of the automotive safety part to the outside. Then, the water enters the first water outlet channel 56 and is finally discharged through the first drain pipe 58.

[0059] Similarly, when the lower die 42 is cooled, cooling water is injected into the second water inlet channel 64 through the second water inlet pipe 67. Then, the water enters each L-shaped cooling channel 63 through a plurality of second connecting channels 65. The water flows from one end of the L-shaped cooling channel 63 to the other end, that is, the water flows from the inside of the automotive safety part to the outside. Then, the water enters the second water outlet channel 66 and is finally discharged through the second drain pipe 68.

[0060] In summary, in the present invention, the upper and lower flow channel groups are divided into a plurality of L-shaped cooling channels, and cooling water is injected into each L-shaped cooling channel. On the one hand, the flow path of the cooling water is shortened, the temperature difference of the water on the flow path is effectively reduced, and the cooling efficiency is improved, so as to achieve rapid cooling of the safety part, and at the same time, the product hardness fluctuation caused by too large temperature difference on the flow path of the cooling water is effectively avoided. On the other hand, it is possible to achieve orderly cooling of the automotive safety part from the inside to the outside, so that the inner core stress-bearing part of the safety part preferentially completes the martensite transformation to obtain high strength, while the outside is cooled relatively slowly to retain a certain plasticity, so that the safety part takes into account the requirements of impact resistance and energy absorption.

[0061] At the same time, the temperature of the cooling water in the L-shaped cooling channel 53 at the upper die rises after heat exchange with the safety part, which increases the pressure in the L-shaped cooling channel 53, thereby pushing the cylinder 594 outward, and then applying a downward pressure on the inner plate 593. The inner plate 593 applies a downward pressure on the upper die 41, so as to cooperate with the hydraulic cylinder 7 to perform pressure holding on the formed automotive safety part during cooling, effectively avoiding the problem of dimensional deviation of the safety part due to cooling springback, and improving the product quality.

[0062] After the cooling work is completed, the mold is opened, and the blanking manipulator 9 clamps and places the automotive safety part on the blanking conveyor 11, and the blanking conveyor 11 transports the automotive safety part to the next station.

[0063] Based on the above content and the drawings, those skilled in the art can understand and implement the present invention. In addition, any non-creative modifications made to the present invention by those skilled in the art without creative labor still fall within the protection scope of the present invention.

Claims

1. A rapid cooling hot stamping equipment for automobile safety parts, characterized in that: The hot stamping machine (1) comprises a support (2), a frame (3) is provided at the bottom of the support (2), a stamping die (4) for automobile safety parts is provided on the frame (3), and the stamping die (4) for automobile safety parts comprises an upper die (41) and a lower die (42) which are arranged in upper and lower parts; An upper mold cooling component (5) is provided on the outer side of the upper mold (41), and the upper mold cooling component (5) comprises an upper shell (51) provided on the outer side of the upper mold (41), and a cooling channel 1 is provided in the upper shell (51), and the cooling channel 1 surrounds the outer side of the upper mold (41); A lower mold cooling component (6) is provided on the outer side of the lower mold (42), and the lower mold cooling component (6) comprises a lower shell (61) provided on the outer side of the lower mold (42), and a second cooling channel is provided in the lower shell (61), and the second cooling channel surrounds the outer side of the lower mold (42).

2. The extremely fast cooling hot stamping equipment for automobile safety parts according to claim 1 is characterized in that: An upper mold accommodating cavity (52) is provided at the bottom of the upper shell (51), the upper mold (41) is arranged inside the upper mold accommodating cavity (52), and a cooling channel surrounds the outer side of the upper mold accommodating cavity (52). The cooling channel 1 includes two groups of mirror-symmetrical upper flow channel groups, and each group of upper flow channel groups includes a plurality of L-shaped cooling flow channels 1 (53), the horizontal portion of the L-shaped cooling flow channel 1 (53) is arranged at the top of the upper mold accommodating cavity (52), and the vertical portion of the L-shaped cooling flow channel 1 (53) is arranged outside the upper mold accommodating cavity (52); The cooling channel 1 also includes two water inlet channels 1 (54) and a water outlet channel 1 (56) arranged on the outer side of the bottom of the upper mold accommodating cavity (52); the water inlet channel 1 (54) is connected to one end of multiple L-shaped cooling channels 1 (53) at its bottom through a connecting channel 1 (55); and the water outlet channel 1 (56) is connected to the other end of multiple L-shaped cooling channels 1 (53).

3. The extremely fast cooling hot stamping equipment for automobile safety parts according to claim 2 is characterized in that: Two water inlet pipes (57) are fixed at the rear end of the upper shell (51) and are respectively connected to the two water inlet channels (54). A drainage pipe (58) is provided at the bottom of each water inlet pipe (57). Both drainage pipes (58) are connected to the water outlet channel (56). Cooling water is injected into the cooling channel through the water inlet pipe (57) and a pair of automobile safety parts are cooled from the inside to the outside and then discharged through the drainage pipe (58).

4. The extremely fast cooling hot stamping equipment for automobile safety parts according to claim 2 is characterized in that: The top of the upper mold (41) is connected to the top of the upper mold accommodating cavity (52) via a plurality of springs (510); when the mold is opened, the upper mold (41) extends out of the bottom of the upper mold accommodating cavity (52) under the elastic force of the springs (510).

5. The extremely fast cooling hot stamping equipment for automobile safety parts according to claim 4 is characterized in that: A connecting piece (59) is provided between the top end of the upper mold accommodating cavity (52) and the top end of the upper mold (41), and the connecting piece (59) is provided between a plurality of springs (510); The connecting member (59) includes an outer plate (591), an intermediate plate (592) and an inner plate (593) which are sequentially arranged from top to bottom. The top end of the outer plate (591) is fixedly connected to the top end of the upper mold accommodating cavity (52). The top end of the intermediate plate (592) extends into the interior of the outer plate (591) and is slidably connected to the outer plate (591). The top end of the inner plate (593) extends into the interior of the intermediate plate (592) and is slidably connected to the intermediate plate (592). The bottom end of the inner plate (593) is fixedly connected to the top end of the upper mold (41).

6. The extremely fast cooling hot stamping equipment for automobile safety parts according to claim 5 is characterized in that: The connecting piece (59) further comprises a cylinder (594) fixed on the top of the inner plate (593), the cylinders (594) are provided with a plurality of cylinders (594) and are evenly distributed, a plurality of circular holes (511) are provided at the bottom of each L-shaped cooling channel (53), each circular hole (511) is respectively provided at the top of each cylinder (594), and the cylinder (594) matches the circular hole (511), when the mold is closed, the connecting piece (59) shrinks, and the cylinder (594) is inserted into the circular hole (511) to seal the circular hole (511).

7. The extremely fast cooling hot stamping equipment for automobile safety parts according to claim 1 is characterized in that: A lower mold accommodating cavity (62) is provided at the top of the lower shell (61), the lower mold (42) is arranged inside the lower mold accommodating cavity (62), and the second cooling channel surrounds the outer side of the lower mold accommodating cavity (62); The cooling channel 2 includes two groups of mirror-symmetrical lower flow channel groups, and each group of lower flow channel groups includes a plurality of L-shaped cooling flow channels 2 (63), the horizontal portion of the L-shaped cooling flow channel 2 (63) is arranged at the bottom of the lower mold accommodating cavity (62), and the vertical portion of the L-shaped cooling flow channel 2 (63) is arranged outside the lower mold accommodating cavity (62); The cooling channel 2 also includes two water inlet channels 2 (64) and a water outlet channel 2 (66) arranged on the outer side of the top of the lower mold accommodating cavity (62), and the water inlet channel 2 (64) is connected to one end of multiple L-shaped cooling channels 2 (63) on its top through a connecting channel 2 (65), and the water outlet channel 2 (66) is connected to the other end of multiple L-shaped cooling channels 2 (63).

8. The extremely fast cooling hot stamping equipment for automobile safety parts according to claim 7 is characterized in that: The rear end of the lower shell (61) is fixed with two water inlet pipes (67) respectively connected to the water inlet channel (64). The top of each water inlet pipe (67) is provided with a drain pipe (68). Both drain pipes (68) are connected to the water outlet channel (66). Cooling water is injected into the cooling channel through the water inlet pipe (67) to cool the automobile safety parts from the inside to the outside and then discharged through the drain pipe (68).

9. The extremely fast cooling hot stamping equipment for automobile safety parts according to claim 1, characterized in that: A hydraulic cylinder (7) for driving the upper shell (51) to rise and fall is fixed on the top of the support (2) to drive the upper mold (41) to rise and fall for opening and closing the mold.

10. The extremely fast cooling hot stamping equipment for automobile safety parts according to claim 1, characterized in that: A loading manipulator (8) and a unloading manipulator (9) are fixed on both sides of the hot stamping machine (1), and a loading conveyor (10) and a unloading conveyor (11) are installed on both sides of the hot stamping machine (1); The feeding manipulator (8) is arranged on the top of the feeding conveyor (10) and is used to deliver the high-temperature automobile safety parts conveyed on the feeding conveyor (10) to the automobile safety parts stamping die (4) for hot stamping processing; The unloading manipulator (9) is arranged on the top of the loading conveyor (10) and is used to deliver the processed automobile safety parts to the unloading conveyor (11) and then transport them to the next workstation.

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