A blanking and pressing device for an automobile B-column hot forming die

Abstract

This invention relates to the field of intelligent automotive manufacturing technology, specifically to a blanking and pressing device for a thermoforming mold of an automotive B-pillar. The device is mounted on the punch of the lower mold base and is used to assist in positioning the blanking piece. The device includes: a pressing platform for carrying the blanking piece, the pressing platform having a positioning structure for positioning the blanking piece, and a clearance structure for avoiding the punch; and a guide and reset assembly connected to the pressing platform, the guide and reset assembly including: a guide component that slides with the lower mold base, and an elastic reset structure for driving the pressing platform to automatically reset. By setting the positioning and clearance structures on the pressing platform, mechanical positioning of the blanking piece can be achieved, reducing positional deviations caused by manual visual alignment. Furthermore, the pressing platform, linked to the mold opening and closing movement via the guide and reset assembly, can achieve automatic reset, reducing manual intervention.

Description

Technical Field

[0001] This invention relates to the field of intelligent manufacturing technology for automobiles, and in particular to a blanking and pressing device for a thermoforming mold of automobile B-pillar. Background Technology

[0002] Hot stamping is a common process for producing high-strength safety structural components such as automotive B-pillars. Existing hot stamping dies mainly consist of a lower die base and an upper die base. The lower die base has a punch, and the upper die base has a die. During hot stamping, the blank, heated to its austenitizing temperature, needs to be accurately placed above the lower die base. Then, the upper die base drives the die downwards, closing with the punch to stamp the blank. The blank is then held under pressure and quenched within the die to ultimately obtain the high-strength B-pillar part.

[0003] In the existing technology, the placement of blanks is mainly divided into two types: automated robotic arm loading and unloading and manual visual alignment. Among them, although automated stamping lines have high precision and efficiency, the initial investment of a complete automated system ranges from hundreds of thousands to millions of yuan, which puts a great financial burden on small and medium-sized enterprises. Moreover, the coverage rate of stamping automation in the entire industry is low, and some old stamping lines still use manual loading and unloading methods.

[0004] For many small and medium-sized stamping enterprises and in the trial production stage of B-pillars, the placement of blanking sheets is still largely limited by both equipment costs and production capacity. This means that operators still rely on visual alignment to roughly adjust the relative position of the blanking sheet edge with the lower die holder or punch boundary. This positioning method, which depends on visual judgment, has a large error and makes it difficult to ensure the consistency of placement each time. This can easily lead to defects such as uneven wall thickness and wrinkles in the stamped parts. Summary of the Invention

[0005] In view of this, the purpose of this invention is to provide a material feeding and pressing device that can achieve rapid and accurate positioning, so as to replace the existing manual visual inspection method, improve the placement accuracy of the material feeding sheet and the consistency of mass production.

[0006] To achieve the above objectives, the present invention provides a blanking and pressing device for a thermoforming mold of an automotive B-pillar, which is disposed on the punch of the lower mold base and is used to assist in positioning the blanking piece. The device includes: A pressure table for carrying blanking sheets, the pressure table is provided with a positioning structure for positioning the blanking sheets, and the pressure table is provided with a clearance structure for avoiding the punch. The guide reset assembly connected to the pressure table includes: a guide member that slides with the lower die base, and an elastic reset structure for driving the pressure table to automatically reset.

[0007] As a preferred embodiment of the present invention, the pressing platform is provided with a built-in cooling channel inside, and the pressing platform is provided with a cooling channel inlet and a cooling channel outlet communicating with the built-in cooling channel outside.

[0008] As a preferred embodiment of the present invention, the pressing table includes a first part and a second part that are detachably connected, and channel grooves forming built-in cooling channels are respectively opened on the mating surfaces of the first part and the second part.

[0009] As a preferred embodiment of the present invention, the outer wall of the pressing table is provided with heat dissipation fins.

[0010] As a preferred embodiment of the present invention, the device further includes a coolant driving assembly, which includes a pumping unit linked to the guide and reset assembly. The pumping unit pumps coolant into the built-in cooling channel under the drive of the guide and reset assembly.

[0011] As a preferred embodiment of the present invention, the coolant drive assembly includes a first plunger pump driven by a guide reset assembly, wherein the inlet of the first plunger pump is connected to the coolant supply end and the outlet is connected to the coolant inlet of the cooling channel.

[0012] As a preferred embodiment of the present invention, the device further includes an external cooling assembly, which includes an annular main tube disposed on the lower mold base and arranged around the pressure plate, wherein a plurality of atomizing nozzles are disposed on the annular main tube and the atomizing nozzles face the outer wall of the pressure plate.

[0013] As a preferred embodiment of the present invention, the coolant drive assembly further includes a second plunger pump that is linked to the guide reset assembly. The inlet of the second plunger pump is connected to the coolant supply end, and the outlet is connected to the annular main pipe.

[0014] As a preferred embodiment of the present invention, an angle adjustment structure is provided between the atomizing nozzle and the annular main pipe for adjusting the spray angle of the atomizing nozzle.

[0015] As a preferred embodiment of the present invention, the elastic reset structure includes a nitrogen spring.

[0016] The beneficial effects of this invention are as follows: By setting a positioning structure and a clearance structure on the pressure plate, mechanical positioning of the blanking sheet can be achieved, reducing the positional deviation caused by manual visual alignment, which is conducive to improving the dimensional consistency of B-pillar thermoformed parts. In addition, the pressure plate is linked with the mold opening and closing movement through the guide reset component, which can realize automatic reset, reducing the intervention of manual auxiliary operation and helping to improve production efficiency. Finally, this device can be adapted to the automatic loading and unloading system and process monitoring module in the existing stamping production line, so it has high practicality in the specific application of hot stamping dies and is suitable for widespread use. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the front-end three-dimensional structure of the present invention; Figure 3 This is a side view of the structure of the present invention; Figure 4 This is a schematic diagram of the rear-end three-dimensional structure of the present invention; Figure 5 This is a three-dimensional structural diagram of the lower mold base, punch, pressure plate, annular main pipe, atomizing nozzle, guide rod and nitrogen spring of the present invention; Figure 6 This is a partial cross-sectional three-dimensional structural diagram of the lower mold base of the present invention; Figure 7 This is a partial cross-sectional three-dimensional structural diagram of the housing, shaft, crank, first rocker arm, first plunger cylinder, first plunger, second rocker arm, second plunger cylinder, and second plunger of the present invention; Figure 8 This is a three-dimensional structural diagram of the pressing table, annular main tube, hollow groove, material dropping plate positioning protrusion and heat dissipation fins of the present invention. Figure 9 For the present invention Figure 8 Enlarged structural diagram at point A in the middle; Figure 10 This is a three-dimensional structural diagram of the top plate, bottom plate, heat dissipation fins, material dropping plate positioning protrusion, built-in cooling channel, cooling channel inlet, cooling channel outlet, bolts, and threaded holes of the present invention.

[0019] The components in the diagram are labeled as follows: 1. Lower mold base; 2. Upper mold base; 3. Punch; 4. Pressure plate; 4.1. Top plate; 4.2. Bottom plate; 4.3. Internal cooling channel; 5. Hollowed-out groove; 6. Blanking plate positioning protrusion; 7. Cooling channel inlet; 8. Cooling channel outlet; 9. Guide rod; 10. Guide groove; 11. Movable plate; 12. Nitrogen spring; 13. Housing; 14. Rotating shaft; 15. Crank; 16. First rocker arm; 17. First plunger cylinder; 18. First... 19. Plunger; 20. First suction port; 21. First spray port; 22. One-way valve; 23. Second rocker arm; 24. Second plunger cylinder; 25. Second suction port; 26. Second spray port; 27. First conduit; 28. Annular main pipe; 29. ​​Support leg; 30. Support frame; 31. Atomizing nozzle; 32. Nozzle conduit; 33. Heat dissipation fins; 34. Second conduit; 35. Die; 36. Rack; 37. Bolt; 38. Threaded hole. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0021] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] Reference Figures 1 to 4 This invention provides a blanking and pressing device for a thermoforming mold of an automobile B-pillar. The device is installed on the punch 3 of the lower mold base 1 of the thermoforming mold, and is used to assist in positioning the blanking piece before stamping, and automatically reset after mold opening to facilitate blanking and the next placement of the blanking piece.

[0023] The mold includes a lower mold base 1 and an upper mold base 2. A punch 3 is fixedly mounted on the lower mold base 1, and a die 35 is fixedly mounted on the upper mold base 2. The outer contour of the punch 3 matches the inner shape of the B-pillar, and the inner cavity of the die 35 matches the outer shape of the B-pillar. This device is set independently of the punch 3 and the die 35, and is mainly arranged around the punch 3.

[0024] Please continue to refer to Figures 1 to 5 This device includes a pressing table 4 for supporting the blanking sheet. The pressing table 4 has a plate-like structure that conforms to the contour of the blanking sheet, and its upper surface forms a flat support platform. The pressing table 4 is provided with a positioning structure for positioning the blanking sheet. In this embodiment, the positioning structure consists of multiple blanking sheet positioning protrusions 6. These blanking sheet positioning protrusions 6 are fixed to the upper surface of the pressing table 4, and their positions and numbers match the positioning holes or notches on the edge of the blanking sheet. The operator only needs to align the positioning area of ​​the blanking sheet with the blanking sheet positioning protrusions 6 to achieve fast and accurate positioning, which helps to avoid errors caused by manual visual alignment.

[0025] The blank holder 4 has a clearance structure in the middle to avoid the punch 3. In this embodiment, the clearance structure is a hollow groove 5. The shape of the hollow groove 5 basically matches the horizontal projection shape of the punch 3, and its size is slightly larger than that of the punch 3, so that the punch 3 can pass through the hollow groove 5 without obstruction and contact the blanking sheet above when the mold is closed, without interfering with the stamping process.

[0026] The pressure plate 4 is connected to a guide reset assembly. The guide reset assembly includes a guide that slides with the lower die base 1, and an elastic reset structure for driving the pressure plate 4 to automatically reset.

[0027] Specifically, such as Figure 4 and Figure 6 As shown, multiple guide rods 9 are fixedly connected to the lower surface end of the pressure plate 4. A guide groove 10 is provided at the corresponding position on the lower mold base 1, and the guide rods 9 are slidably inserted into the guide groove 10. The lower ends of all guide rods 9 (i.e., the ends away from the pressure plate 4) are fixedly connected to a movable plate 11. The movable plate 11 is horizontally arranged and located in the space below the lower mold base 1.

[0028] The elastic reset structure includes multiple nitrogen springs 12. A base (not labeled in the figure) is provided below the lower mold base 1. The cylinder of the nitrogen spring 12 is fixed on the base, and the movable end (piston rod) of the nitrogen spring 12 pushes upward against the bottom of the movable plate 11. In the initial state, the nitrogen spring 12 has a certain preload, which lifts the movable plate 11, and then lifts the pressure plate 4 to the highest position (i.e., the material release position) through the guide rod 9. When the upper mold base 2 drives the die 35 to move downward and contact the material release plate on the pressure plate 4, the pressure plate 4 is forced to move downward, compressing the nitrogen spring 12. After the mold opens, the nitrogen spring 12 releases energy and pushes the pressure plate 4 to automatically reset to the highest position.

[0029] Reference Figure 8 , Figure 9 and Figure 10Because the pressure plate 4 is in contact with the high-temperature sheet metal (above 900°C) for a long time during the thermoforming process, the temperature of the pressure plate 4 itself will rise, which may cause thermal deformation or affect the positioning accuracy. Therefore, this embodiment has made cooling improvements to the pressure plate 4.

[0030] like Figure 10 As shown, in this embodiment, the pressing platform 4 has an internal cooling channel 4.3. The outer wall of the pressing platform 4 is provided with a cooling channel inlet 7 and a cooling channel outlet 8, which communicate with the internal cooling channel 4.3. Room temperature coolant (e.g., water or water-based coolant) enters the internal cooling channel 4.3 through the cooling channel inlet 7, flows through the inside of the pressing platform 4, and is discharged through the cooling channel outlet 8, thereby carrying away heat and reducing the temperature of the pressing platform 4.

[0031] Please continue to refer to Figure 8 and Figure 10 To facilitate the machining of the built-in cooling channel 4.3, this embodiment adopts a split structure. The pressure table 4 includes a detachably connected first part and a second part. In this embodiment, the first part is a top plate 4.1, and the second part is a bottom plate 4.2. Channel grooves constituting the built-in cooling channel 4.3 are respectively machined or cast on the mating surfaces of the top plate 4.1 and the bottom plate 4.2. When the top plate 4.1 and the bottom plate 4.2 are closed, the two channel grooves are joined to form a complete built-in cooling channel 4.3. Multiple threaded holes 38 are correspondingly provided on the top plate 4.1 and the bottom plate 4.2. A detachable fixed connection can be achieved by passing bolts 37 through the threaded holes 38 and tightening them. This structure not only reduces the machining difficulty but also facilitates subsequent cleaning of scale or maintenance.

[0032] In addition, refer to Figure 8 , Figure 9 and Figure 10 The outer wall (e.g., the four sides) of the pressure table 4 is also provided with heat dissipation fins 33. The heat dissipation fins 33 are integrally formed or welded to the pressure table 4 to increase the contact area with air, assist in natural heat dissipation, and further reduce the temperature of the pressure table 4.

[0033] Reference Figure 6 and Figure 7 To achieve automatic pumping of coolant without the need for an additional electric pump, this embodiment also includes a coolant drive assembly. This coolant drive assembly includes a pumping unit linked to the guide and reset assembly. Driven by the guide and reset assembly, the pumping unit pumps the coolant into the built-in cooling channel 4.3.

[0034] Specifically, please continue to refer to Figure 6 and Figure 7A housing 13 is fixedly mounted on a base below the lower mold base 1. A rotating shaft 14 is rotatably mounted inside the housing 13 via bearings. One end of the rotating shaft 14 extends out of the housing 13 and is fixedly connected to a gear (not separately marked in the figure). The other end of the rotating shaft 14, located inside the housing 13, is fixedly connected to a crank 15. A vertically downward extending rack 36 is fixedly connected to the lower end of the movable plate 11, and this rack 36 meshes with the gear on the rotating shaft 14. When the movable plate 11 moves up and down with the opening and closing mold, the rack 36 drives the gear to rotate, thereby driving the rotating shaft 14 and the crank 15 to rotate.

[0035] Reference Figure 7 A first plunger cylinder 17 is fixedly mounted on the housing 13, and a first plunger 18 is slidably fitted inside the first plunger cylinder 17. The outer end of the first plunger 18 is movably hinged to the free end of the crank 15 through a first rocker arm 16. The crank 15, the first rocker arm 16, and the first plunger 18 constitute a crank-rocker mechanism, which converts rotational motion into reciprocating linear motion.

[0036] The first plunger cylinder 17 has a first suction port 19 and a first spray port 20 at its end (the side away from the first rocker arm 16). Both the first suction port 19 and the first spray port 20 are equipped with one-way valves 21, ensuring that coolant can only flow into the first plunger cylinder 17 from the first suction port 19 and only flow out from the first spray port 20. The first suction port 19 is connected to the coolant supply end (e.g., a conventional coolant storage tank) via a pipeline. The first spray port 20 is connected to the cooling channel inlet 7 on the pressure platform 4 via a first conduit 27.

[0037] The working process is as follows: When the opening and closing mold drives the movable plate 11 to rise and fall, the rack 36 drives the gear and the rotating shaft 14 to rotate in both directions, and the crank 15 rotates accordingly, driving the first plunger 18 to reciprocate in the first plunger cylinder 17 through the first rocker arm 16. During the suction stroke, the first plunger 18 is pulled outward, and the one-way valve 21 in the first liquid extraction port 19 opens, allowing coolant to be drawn into the first plunger cylinder 17; during the pressure stroke, the first plunger 18 is pushed inward, and the one-way valve 21 in the first liquid injection port 20 opens, allowing coolant to be pressurized and pumped into the built-in cooling channel 4.3 through the first conduit 27. Thus, the circulation of coolant is entirely driven by the mechanical movement of the opening and closing mold, requiring no external power or air source, and the flow rate automatically matches the production cycle.

[0038] Reference Figure 6 , Figure 7 , Figure 8 and Figure 9 To further improve the cooling effect and prevent the temperature of the outer wall of the pressure plate 4 from being too high, which would cause the internal coolant to produce film boiling (i.e., the coolant boils violently on the inner wall of the flow channel to form a vapor film, which would reduce the heat exchange efficiency), this embodiment also provides an external cooling component.

[0039] Reference Figure 5 , Figure 8 and Figure 9 The external cooling assembly includes an annular main pipe 28 disposed on the lower mold base 1 and arranged around the pressure platen 4. The annular main pipe 28 is fixed to the upper surface of the lower mold base 1 by multiple support legs 29 and surrounds the periphery of the pressure platen 4. Multiple atomizing nozzles 31 are evenly arranged circumferentially on the annular main pipe 28. The inlet of each atomizing nozzle 31 communicates with the interior of the annular main pipe 28, and the outlet faces the outer wall (including the side and bottom surfaces) of the pressure platen 4. The atomizing nozzles 31 can be pressure atomizing nozzles, capable of atomizing the coolant into fine droplets at lower pressures. The atomizing nozzles 31 are also connected to the annular main pipe 28 via nozzle guide tubes 32 (see [reference]). Figure 9 ).

[0040] Reference Figure 7 To drive the coolant used for external cooling, the coolant drive assembly also includes a second plunger pump linked to the guide and reset assembly. Specifically, a second plunger cylinder 23 is fixedly mounted on the housing 13, and a second plunger 24 is slidably disposed within the second plunger cylinder 23. The outer end of the second plunger 24 is connected to the same crank 15 via a second rocker arm 22. The end of the second plunger cylinder 23 is provided with a second suction port 25 and a second spray port 26, both of which are equipped with one-way valves 21. The second suction port 25 is connected to the coolant supply end (which can share the same storage tank as the first plunger pump), and the second spray port 26 is connected to the supply connector on the annular main pipe 28 via a second conduit 34.

[0041] When crank 15 rotates, it simultaneously drives the first plunger 18 and the second plunger 24 to reciprocate. The second plunger 24 pressurizes the coolant and sends it into the annular main pipe 28, where it is atomized by the atomizing nozzle 31 and sprayed onto the outer wall of the pressure platform 4. The atomized droplets evaporate on the outer wall of the pressure platform 4, rapidly absorbing and carrying away a large amount of heat, thus lowering the temperature of the outer wall of the pressure platform 4. This external forced cooling, in conjunction with the internal cooling channel, controls the overall temperature of the pressure platform 4 within a reasonable range, preventing the inner wall temperature from exceeding the boiling point of the coolant, thereby avoiding film boiling of the internal coolant and ensuring that the internal cooling is always in a highly efficient single-phase forced convection or nucleation boiling heat transfer state.

[0042] In addition, the sprayed atomized droplets can also blow away impurities such as oxide scale and debris adhering to the outer wall of the pressure plate 4, thus cleaning the mold.

[0043] Reference Figure 9To accommodate different sizes of B-pillar molds or adjust the spray coverage area, an angle adjustment structure is provided between the atomizing nozzle 31 and the annular main pipe 28. Specifically, a support frame 30 is fixedly mounted on the annular main pipe 28, and the support frame 30 has a rotating hole. A rotating shaft is integrally formed or fixedly connected to the end of the atomizing nozzle 31, and this rotating shaft is rotatably inserted into the rotating hole of the support frame 30. The surface of the rotating shaft has external threads and is fitted with a locking nut (not shown in the figure). When it is necessary to adjust the spray angle, loosen the locking nut, rotate the atomizing nozzle 31 to the desired angle, and then tighten the locking nut to fix it. This structure allows for flexible adjustment of the spray direction and range on-site according to actual working conditions.

[0044] In this embodiment, the elastic reset structure is preferably a nitrogen spring 12. The nitrogen spring 12 has advantages such as small size, high elastic force, long stroke, and stable operation, making it very suitable for providing stable reset force within the confined space of the mold. The nitrogen spring 12 can be a regular nitrogen spring, or a time-delayed nitrogen spring can be selected according to actual needs. However, thanks to the external cooling and positioning functions of this device, a regular nitrogen spring is sufficient, thereby reducing mold costs.

[0045] The working process of this device is described below in conjunction with the above structure, specifically including the following steps: First, in the initial state, the nitrogen spring 12 lifts the pressure table 4 to its highest position. The operator places the material dropper on the support surface of the pressure table 4 and aligns the positioning hole or notch on the edge of the material dropper with the positioning protrusion 6 of the material dropper to complete the rapid positioning.

[0046] Then, the upper mold base 2 drives the die 35 downward, first contacting the blanking sheet and pressing the pressure plate 4 downward together. The pressure plate 4 moves downward through the guide rod 9 and the movable plate 11, compressing the nitrogen spring 12. The hollow groove 5 moves upward relative to the punch 3, and the punch 3 passes through the hollow groove 5. Finally, the punch 3 and the die 35 are completely closed, completing the hot stamping of the B-pillar. During this process, the downward movement of the movable plate 11 drives the rack 36 to drive the gear, the rotating shaft 14, and the crank 15 to rotate, thereby driving the first plunger 18 and the second plunger 24 to reciprocate, pumping coolant into the built-in cooling channel 4.3 and the annular main pipe 28 respectively, to cool the pressure plate 4 internally and externally synchronously.

[0047] Next, after stamping, the upper die holder 2 drives the die cavity 35 to rise. The nitrogen spring 12 releases energy, pushing the movable plate 11, guide rod 9, and pressure plate 4 to return to their original positions. Since the formed B-pillar part is wrapped around the punch 3, it will not rise with the pressure plate 4, so the pressure plate 4 automatically separates from the part. The operator uses pliers or other tools to remove the semi-finished part from the punch 3, thus completing one work cycle.

[0048] In summary, during continuous high-speed production, the internal and external cooling systems operate continuously, stabilizing the temperature of the pressure plate 4 within the set range. This effectively avoids problems such as film boiling and heat exchange failure caused by heat accumulation, ensuring positioning accuracy and device lifespan.

[0049] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity. Any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A blanking and pressing device for a thermoforming mold of an automobile B-pillar, characterized in that, The device, which is positioned on the punch (3) of the lower die holder (1) and used to assist in positioning the blanking sheet, includes: The pressure table (4) is used to carry the blanking sheet. The pressure table (4) is provided with a positioning structure for positioning the blanking sheet. The pressure table (4) is provided with a clearance structure for avoiding the punch (3). The guide reset assembly connected to the pressure plate (4) includes: a guide member that slides with the lower mold base (1), and an elastic reset structure for driving the pressure plate (4) to automatically reset.

2. The blanking and pressing device for the automotive B-pillar thermoforming mold according to claim 1, characterized in that, The pressing platform (4) has an internal cooling channel (4.3) and an external cooling channel inlet (7) and a cooling channel outlet (8) that are connected to the internal cooling channel (4.3).

3. The blanking and pressing device for the automotive B-pillar thermoforming mold according to claim 2, characterized in that, The pressing table (4) includes a first part and a second part that can be detachably connected. The mating surfaces of the first part and the second part are respectively provided with channel grooves that form a built-in cooling channel (4.3).

4. The blanking and pressing device for the automotive B-pillar thermoforming mold according to claim 1, characterized in that, The outer wall of the pressing table (4) is provided with heat dissipation fins (33).

5. The blanking and pressing device for the automotive B-pillar thermoforming mold according to claim 2, characterized in that, The device also includes a coolant driving assembly, which includes a pumping unit linked to the guide reset assembly. The pumping unit pumps coolant into the built-in cooling channel (4.3) under the drive of the guide reset assembly.

6. The blanking and pressing device for the automotive B-pillar thermoforming mold according to claim 5, characterized in that, The coolant drive assembly includes a first plunger pump driven by a guide reset assembly. The inlet of the first plunger pump is connected to the coolant supply end, and the outlet is connected to the coolant inlet (7) of the cooling channel.

7. The blanking and pressing device for the automotive B-pillar thermoforming mold according to claim 6, characterized in that, The device also includes an external cooling assembly, which includes an annular main pipe (28) disposed on the lower mold base (1) and arranged around the pressure plate (4), the annular main pipe (28) being provided with a plurality of atomizing nozzles (31) facing the outer wall of the pressure plate (4).

8. The blanking and pressing device for the automotive B-pillar thermoforming mold according to claim 7, characterized in that, The coolant drive assembly also includes a second plunger pump that is linked to the guide reset assembly. The inlet of the second plunger pump is connected to the coolant supply end, and the outlet is connected to the annular main pipe (28).

9. The blanking and pressing device for the automotive B-pillar thermoforming mold according to claim 7, characterized in that, An angle adjustment structure is provided between the atomizing nozzle (31) and the annular main pipe (28) for adjusting the spray angle of the atomizing nozzle (31).

10. The blanking and pressing device for the automotive B-pillar thermoforming mold according to claim 1, characterized in that, The elastic reset structure includes a nitrogen spring (12).

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