Softening equipment for thermal forming structural part of automobile

Abstract

The invention relates to automobile thermal forming structural part softening equipment in the technical field of automobile accessory softening, which comprises an equipment box body, a plurality of groups of lower supporting assemblies are arranged in the equipment box body, so that the whole automobile thermal forming structural part can be heated and softened conveniently, and an upper supporting assembly is arranged at the top of each group of lower supporting assembly; the structure of the upper supporting assembly is the same as that of the lower supporting assembly, and the upper supporting assembly and the lower supporting assembly are distributed in a mirror image mode, so that local heating and softening of the automobile thermal forming structural part are facilitated. The automobile thermal forming structural part is placed on the top of the supporting part and makes multi-point contact with the supporting part, the automobile thermal forming structural part can be evenly heated and softened conveniently, and two sets of isolation parts are arranged at the top end of the supporting plate and arranged on the two sides of the supporting part respectively. According to the method, the continuity and uniformity of strength distribution on the structural part can be optimized, and the dimensional precision and shape stability of the structural part can be improved.

Description

Technical Field

[0001] This invention relates to the field of automotive parts softening technology, and in particular to a softening device for automotive thermoformed structural parts. Background Technology

[0002] Hot-formed structural components in automobiles, such as hot-formed steel parts, play a crucial role. Taking the chassis and door rings as examples, these are key parts of the vehicle's structure. In a collision, hot-formed steel components, with their superior strength, can resist deformation, significantly reducing intrusion into the passenger compartment and preserving survival space for occupants. Furthermore, compared to traditional steel components, hot-formed steel components can reduce weight by up to 30% while maintaining safety. In the hot-forming process of these structural components, the material must maintain sufficient flexibility at high temperatures to meet the molding requirements. If the material does not possess an appropriate softening temperature range, it is prone to cracking or deformation at the edges and corners due to excessive rigidity during rapid cooling, affecting the integrity of the finished product. Moreover, softening treatment of the material can also improve its collision energy absorption capacity.

[0003] Currently, when structural components are heated and softened as a whole, they are usually placed on a workbench or support frame. The contact area between the structural component and the workbench or support frame will have a temperature deviation due to heat obstruction, resulting in uneven heating of the structural component as a whole. This can easily lead to uneven strength of the structural component. For example, during a collision, the low-temperature contact area may deform excessively first due to insufficient strength, causing the overall energy absorption path to become disordered, or even causing unexpected fracture, which seriously threatens the collision safety of the entire vehicle.

[0004] Secondly, for the same structural component requiring different strength ranges in different areas, local softening devices can be used. For example, existing technology CN118668039A describes a local softening device for thermoformed structural components. This device uses an inflatable airbag to envelop the structural component, creating physical isolation between high and low temperature zones. This ensures that automotive parts can be heated to different temperatures in different areas, thus achieving different strength ranges for the structural component. However, there is also a significant temperature transition defect: in areas where the airbag is in close contact with the surface of the structural component, a temperature blind zone is formed due to the physical shielding of the airbag itself. This area cannot be fully utilized by the high-temperature heating source, nor can it be completely kept at a low temperature due to its proximity to the high-temperature zone. The final temperature is typically 100-200°C lower than the design target. In practical use, this transition zone becomes a weak point in the structural component's mechanics. Not only does it lead to unexpected deformation during subsequent processing or use, affecting the overall vehicle assembly accuracy, but it is also highly susceptible to early fatigue fracture due to stress concentration when subjected to alternating loads or collision impacts. Summary of the Invention

[0005] To address the problems mentioned in the background section, the present invention provides the following technical solution:

[0006] A softening device for automotive thermoformed structural parts includes a housing with multiple sets of lower support components inside, facilitating the overall heating and softening of the automotive thermoformed structural parts.

[0007] Each set of lower support components is provided with an upper support component at the top. The upper support component has the same structure as the lower support component, and the upper support component and the lower support component are mirror images of each other, which facilitates local heating and softening of automotive thermoformed structural parts.

[0008] The lower support assembly includes a support plate with a downwardly recessed top and a support member at the top. The automotive thermoformed structural component is placed on top of the support member and makes multi-point contact with the support member, which facilitates uniform heating and softening of the automotive thermoformed structural component.

[0009] The top of the support plate is provided with two sets of isolation members, which are respectively located on both sides of the support member. They are used to fix and separate different areas of the automotive thermoformed structural parts when the parts are locally heated and softened.

[0010] Furthermore, the support member includes a hollow plate fixed to the top of the support plate, and a plurality of airbags are fixed to the top of the hollow plate, with the interior of the airbags communicating with the interior of the hollow plate.

[0011] Furthermore, an air pipe communicating with the interior of the hollow plate is fixed on one side of the support plate, and the air pipes on two adjacent support plates are connected by a pipe; an external air pipe is fixed on one side of the equipment box, and the air pipe on the outermost support plate is connected to the external air pipe by a pipe, which facilitates the inflation and deflation of the airbag.

[0012] Furthermore, an air hole communicating with the interior of the hollow plate is provided on one side of the hollow plate, and an air channel is provided inside the support plate. One end of the air channel communicates with the air hole, and the other end of the air channel extends to the top of the support plate.

[0013] Furthermore, the isolation component includes a liquid bladder fixed to the top of the support plate. Each liquid bladder has a water inlet channel and a water outlet channel at its bottom end. The water inlet channel and the water outlet channel are both located inside the support plate, and the ends of the water inlet channel and the water outlet channel away from the liquid bladder extend to the top of the support plate. The two water inlet channels inside the support plate are connected, and the two water outlet channels inside the support plate are connected. A liquid inlet pipe communicating with the inside of the water inlet channel and a liquid outlet pipe communicating with the inside of the water outlet channel are fixed on one side of the support plate.

[0014] Furthermore, the inlet pipes on two adjacent support plates and the outlet pipes on two adjacent support plates are connected by pipes; an external inlet pipe and an external outlet pipe are fixed on one side of the equipment housing, the inlet pipe on the outermost support plate is connected to the external inlet pipe by a pipe, and the outlet pipe on the support plate is connected to the external outlet pipe by a pipe, which facilitates the filling and emptying of all liquid bladders. The liquid can be coolant, used for physical isolation between different temperature zones.

[0015] Furthermore, the top of the support plate has a cavity, and the bottom of the cavity has a heating chamber. The hollow plate is fixed inside the cavity to seal the top of the heating chamber. Both the cavity and the heating chamber are located inside the water inlet channel and the water outlet channel. A heating device is fixed inside the heating chamber.

[0016] Furthermore, two mounting plates are fixed on both sides of the support plate, and the support plate can slide inside the equipment box. When the upper support component moves to the top of the lower support component, the mounting plates of the lower support component and the upper support component are fixed to fix the lower support component and the upper support component, so that the lower support component and the upper support component can divide the equipment box into multiple heating zones, thereby facilitating the local heating and softening of automotive thermoformed structural parts. When the upper support component is located at the top of the lower support component, the air passage, water inlet passage and drainage passage on the lower support component and the upper support component are connected.

[0017] Furthermore, a heating component is provided on the rear side of the equipment housing. The heating component includes a shell, and an opening communicating with the shell is provided on the rear side of the equipment housing. The same number of partitions as the upper support component are slidably provided inside the shell. Each partition is fixed to the rear end of the upper support component, so that the partition can move with the upper support component.

[0018] Furthermore, heaters are fixed on one side of each partition and on one side wall inside the equipment housing. Multiple partitions divide the interior of the outer shell into multiple temperature zones, and each temperature zone corresponds to and is connected to the heating zone inside the equipment housing.

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

[0020] 1. When automotive thermoformed structural parts are heated as a whole, the structural parts are placed on multiple support plates, and the inflated airbags on the support plates provide multi-point support from the bottom. This effectively reduces the contact area between the structural parts and the support plates, avoiding temperature deviations caused by a large heat-blocking area of ​​the structural parts. At the same time, the heat-blocking parts of the structural parts (the contact area between the airbags and the structural parts) are also heated simultaneously, effectively improving the uniformity of the overall heating of the structural parts, and thus effectively improving the uniformity of the strength of the structural parts.

[0021] 2. When automotive thermoformed structural parts are locally heated and softened, the upper and lower support assemblies divide the equipment box into multiple temperature zones according to the strength zone of the structural parts. The structural parts are located between the upper and lower support assemblies. The liquid bladders of the upper and lower support assemblies are filled with coolant, which expands and wraps around and clamps the structural parts to fix them. At the same time, the liquid bladders and the coolant inside can isolate different temperature zones on the structural parts so that different temperature zones can be heated to different required temperatures, so that the same structural parts have different strength ranges in different temperature zones.

[0022] At the same time, the following can be achieved in the temperature transition zone between each temperature zone on the structural component (the part of the structural component located between the upper and lower support assemblies):

[0023] 1. The heating device heats the temperature transition zone to the required temperature, and the inflated airbags on the support plate provide multi-point support for the top and bottom of the structural component, effectively reducing the contact area between the structural component and the support plate. This avoids temperature deviation caused by a large heat-blocking area of ​​the structural component. At the same time, the heat-blocking parts of the structural component (the contact area between the airbag and the structural component) are also heated simultaneously, effectively improving the heating uniformity of the parts of the structural component located in the temperature transition zone, thereby effectively improving the uniformity of strength of each area of ​​the structural component.

[0024] 2. The temperature in the temperature transition zone is between the temperature ranges of the two temperature zones on both sides, which brings a gentle temperature gradient to the structural component. This can optimize the continuity of the strength distribution on the structural component and help improve the dimensional accuracy and shape stability of the structural component. Attached Figure Description

[0025] Figure 1 This is an overall structural diagram of the present invention;

[0026] Figure 2 This is a diagram showing the internal structure of the device housing of the present invention;

[0027] Figure 3 This is a structural diagram of the lower support component of the present invention;

[0028] Figure 4 Cross-sectional view of the lower support component of the present invention Figure 1 ;

[0029] Figure 5 This is a cross-sectional view of the support member of the present invention;

[0030] Figure 6 Cross-sectional view of the lower support component of the present invention Figure 2 ;

[0031] Figure 7 for Figure 6 Enlarged view of section A in the middle;

[0032] Figure 8This is a structural diagram of the lower support component and the upper support component of the present invention;

[0033] Figure 9 for Figure 8 Cross-section Figure 1 ;

[0034] Figure 10 for Figure 8 Cross-section Figure 2 ;

[0035] Figure 11 for Figure 8 A partial sectional view;

[0036] Figure 12 This is a cross-sectional view of the device housing and heating assembly of the present invention;

[0037] Figure 13 This is a schematic diagram illustrating the operation of the present invention.

[0038] The following is a list of component names represented by the various reference numerals in the attached figures:

[0039] 1-Equipment enclosure;

[0040] 2-Lower support assembly, 21-Support plate, 22-Support component, 23-Isolation component, 24-Cavity, 25-Heating chamber, 26-Heating device, 27-Mounting plate;

[0041] 221-Hollow plate, 222-Airbag, 223-Trachea, 224-Air hole, 225-Airway;

[0042] 231-Liquid bladder, 232-Water inlet channel, 233-Drainage channel, 234-Liquid inlet pipe, 235-Liquid outlet pipe;

[0043] 3-Upper support components;

[0044] 4-Heating component, 41-Housing shell, 42-Baffle plate, 43-Heater;

[0045] 5-External trachea, 6-External inlet tube, 7-External outlet tube. Detailed Implementation

[0046] The preferred embodiments of the present invention are described in detail below, and a clear and complete description is provided in conjunction with the accompanying drawings.

[0047] Please see Figures 1-13 The present invention provides a softening device for automotive thermoformed structural parts, including a device housing 1, wherein heaters 43 are fixed on one side wall inside the device housing 1.

[0048] The equipment housing 1 is provided with multiple sets of lower support components 2. The lower support components 2 include support plates 21. The support plates 21 are made of a material with good heat insulation. The bottom of the support plates 21 can be connected to the bottom of the equipment housing 1 through a slide rail so that the support plates 21 can slide inside the equipment housing 1. Two mounting plates 27 are fixed on both sides of the support plates 21.

[0049] The top of the support plate 21 is recessed downwards, and a support member 22 is provided at the top of the support plate 21. The support member 22 includes a hollow plate 221 fixed to the top of the support plate 21. Multiple airbags 222 are fixed to the top of the hollow plate 221, and the interior of the airbags 222 is connected to the interior of the hollow plate 221. An air pipe 223 communicating with the interior of the hollow plate 221 is fixed to one side of the support plate 21. An electric valve is fixed to each air pipe 223. The air pipes 223 on two adjacent support plates 21 are connected by a pipe. The pipe is preferably a corrugated pipe that can be freely extended and bent to avoid affecting the sliding of the support plate 21. An external air pipe 5 is fixed to one side of the equipment box 1. The air pipe 223 on the outermost support plate 21 is connected to the external air pipe 5 by a pipe. The pipe is also preferably a corrugated pipe that can be freely extended and bent to avoid affecting the sliding of the support plate 21.

[0050] The hollow plate 221 has an air hole 224 on one side that communicates with the interior of the hollow plate 221. The support plate 21 has an air channel 225 inside. One end of the air channel 225 communicates with the air hole 224, and the other end of the air channel 225 extends to the top of the support plate 21.

[0051] When heating the automotive thermoformed structural parts (hereinafter referred to as structural parts) as a whole, first slide the lower support assembly 2 according to the length of the structural parts to adjust the position of the lower support assembly 2. Then, the top of each air passage 225 is sealed with a plug. The structural parts are placed on the lower support assembly 2. The external air pipe 5 is connected to the air pump to inflate multiple airbags 222 at the same time. After the airbags 222 expand, they push the structural parts upward to achieve multi-point support at the bottom of the structural parts. Then, the heater 43 is started to heat the equipment box 1 to the required temperature to heat and soften the structural parts.

[0052] Meanwhile, the present invention has a cavity 24 at the top of the support plate 21, and a heating chamber 25 at the bottom of the cavity 24. The hollow plate 221 is fixed in the cavity 24 by bolts to seal the top of the heating chamber 25, and a heating device 26 is fixed in the heating chamber 25. In addition, the hollow plate 221 is made of a material with good thermal conductivity, such as copper or aluminum, and the airbag 222 is made of a material with good thermal conductivity, such as thermally conductive silicone rubber or thermally conductive polyurethane elastomer. Moreover, the gas filled in the airbag 222 is a gas with good thermal conductivity, such as hydrogen.

[0053] While the heater 43 heats the structural component, the heating device 26 works to heat the heating chamber 25 to the required temperature. The heat is transferred through the hollow plate 221 and the airbag 222 to the contact part between the airbag 222 and the structural component, which helps to keep the temperature of the contact part between the airbag 222 and the structural component consistent with the temperature of other parts of the structural component.

[0054] Compared with the prior art, the present invention has the following advantages: on the one hand, the structural component is supported by the support member 22 from the bottom at multiple points, which effectively reduces the contact area between the structural component and the support plate 21 and avoids the temperature deviation caused by the large heat-blocking area of ​​the structural component; on the other hand, the heat-blocking part of the structural component (the contact part between the airbag 222 and the structural component) is also heated simultaneously, which effectively improves the uniformity of the overall heating of the structural component, and thus effectively improves the uniformity of the strength of the structural component.

[0055] Next, two sets of isolation members 23 are provided at the top of the support plate 21. The two sets of isolation members 23 are respectively located on both sides of the support member 22. Each isolation member 23 includes a liquid bladder 231 fixed to the top of the support plate 21. The liquid bladder 231 is made of a material with good heat insulation properties, such as polytetrafluoroethylene. Each liquid bladder 231 has a water inlet channel 232 and a water outlet channel 233 connected to its bottom end. The water inlet channel 232 and the water outlet channel 233 are both opened inside the support plate 21 and are far away from the liquid. One end of the bladder 231 extends to the top of the support plate 21. The two water inlet channels 232 inside the support plate 21 are connected, and the two drainage channels 233 inside the support plate 21 are connected. A liquid inlet pipe 234 communicating with the inside of the water inlet channel 232 and a liquid outlet pipe 235 communicating with the inside of the drainage channel 233 are fixed on one side of the support plate 21. An electric valve is fixed on each liquid inlet pipe 234 and liquid outlet pipe 235. The cavity 24 and the heating cavity 25 are both located inside the water inlet channel 232 and the drainage channel 233.

[0056] The inlet pipes 234 on two adjacent support plates 21 and the outlet pipes 235 on two adjacent support plates 21 are connected by pipes. An external inlet pipe 6 and an external outlet pipe 7 are fixed on one side of the equipment housing 1. The inlet pipe 234 on the outermost support plate 21 is connected to the external inlet pipe 6 by pipes, and the outlet pipe 235 on the support plate 21 is connected to the external outlet pipe 7 by pipes, which facilitates the filling and emptying of all liquid bladders 231. All the above pipes are preferably corrugated pipes that can be freely extended, retracted and bent to avoid affecting the sliding of the support plates 21.

[0057] Each set of lower support components 2 is topped with an upper support component 3. The upper support component 3 has the same structure as the lower support component 2, and the upper support component 3 and the lower support component 2 are mirror images of each other. The top of the support plate 21 of the upper support component 3 can be connected to the top of the inside of the equipment housing 1 via a slide rail. When the structural components are heated as a whole, all upper support components 3 move to one side inside the equipment housing 1, such as... Figure 13 As shown, this is to avoid hindering the overall heating operation of the structural components.

[0058] Next, a heating component 4 is provided on the rear side of the equipment housing 1. The heating component 4 includes a housing 41, which is made of a material with good heat insulation. An opening communicating with the housing 41 is provided on the rear side of the equipment housing 1. The same number of partitions 42 as the upper support component 3 are slidably provided inside the housing 41. Each partition 42 is fixed to the rear end of the upper support component 3 so that the partition 42 can move with the upper support component 3. A heater 43 is fixed on one side of each partition 42.

[0059] When locally heating and softening the structural components, the position of the lower support assembly 2 is first adjusted according to the strength zone division of the structural components. Then, the structural components are placed on the lower support assembly 2. Each upper support assembly 3 is then moved to the top of each lower support assembly 2. The mounting plates 27 of the lower support assembly 2 and the upper support assembly 3 are then fixed with bolts to fix the lower support assembly 2 and the upper support assembly 3. At this time, the structural components are located between the lower support assembly 2 and the upper support assembly 3. The air passage 225, water inlet passage 232, and drainage passage 233 on the lower support assembly 2 and the upper support assembly 3 are connected. Moreover, the lower support assembly 2 and the upper support assembly 3 divide the equipment box 1 into multiple heating zones. While the upper support assembly 3 moves, the partition 42 moves accordingly, thereby dividing the outer shell 41 into multiple temperature zones. The temperature zones correspond one-to-one with the heating zones in the equipment box 1.

[0060] Then, the external air pipe 5 is connected to an air pump to simultaneously inflate multiple airbags 222 on the lower support assembly 2 and the upper support assembly 3. After the airbags 222 expand, they support the structural components, achieving multi-point support for the top and bottom of the structural components. At the same time, the external inlet pipe 6 and the external outlet pipe 7 are both connected to water pumps, which transport coolant to the liquid bag 231 through the water inlet channel 232, and then discharge it through the drainage channel 233 and the external outlet pipe 7, realizing the circulation of coolant in the liquid bag 231. Moreover, the coolant in the liquid bag 231 causes the liquid bag 231 to expand. The expansion of the liquid bag 231 on the lower support assembly 2 and the upper support assembly 3 wraps around and clamps the structural components to fix them. Furthermore, the liquid bag 231 and the coolant inside it can isolate different temperature zones on the structural components.

[0061] Then, the heaters 43 in each heating zone and the heaters 43 inside the equipment housing 1 are activated, heating different temperature zones within the equipment housing 1 to different required temperatures, thus enabling the same structural component to have different strength ranges in different temperature zones. Simultaneously, in the temperature transition zone between each temperature zone on the structural component, i.e., the part of the structural component located between the lower support assembly 2 and the upper support assembly 3, this temperature transition zone is isolated from the temperature zones on either side by the liquid bladder 231 and the coolant inside. In the temperature transition zone, the following can be achieved:

[0062] 1. The heating device 26 heats the temperature transition zone to the required temperature. Because the inflated airbag 222 provides multi-point support for the top and bottom of the structural component, the contact area between the structural component and the support plate 21 is effectively reduced, avoiding temperature deviation caused by a large heat-blocking area of ​​the structural component. While the heating device 26 is working, heat is transferred through the hollow plate 221 and the airbag 222 to the contact area between the airbag 222 and the structural component. The heat-blocking part of the structural component (the contact area between the airbag 222 and the structural component) is also heated simultaneously, effectively improving the heating uniformity of the part of the structural component located in the temperature transition zone, thereby effectively improving the strength uniformity of each area of ​​the structural component.

[0063] 2. The temperature in the temperature transition zone is between the temperature ranges of the two temperature zones on both sides, which brings a gentle temperature gradient to the structural component. This can optimize the continuity of the strength distribution on the structural component and help improve the dimensional accuracy and shape stability of the structural component.

[0064] Finally, it should be noted that the present invention can be fitted with sealing structures as needed. For example, when the upper support component 3 moves to the top of the lower support component 2, the air passage 225 between the lower support component 2 and the upper support component 3 needs to be sealed to prevent air leakage, the water inlet channel 232 between the lower support component 2 and the upper support component 3 needs to be sealed to prevent water leakage, the drainage channel 233 between the lower support component 2 and the upper support component 3 needs to be sealed to prevent water leakage, the support plate 21 needs to be sealed with the inner wall of the equipment box 1, the partition 42 needs to be sealed with the outer shell 41, and the hollow plate 221 needs to be sealed with the heating chamber 25, etc.

[0065] Based on the above description and accompanying drawings, those skilled in the art can understand and implement this invention. Furthermore, any non-creative modifications made to this invention by those skilled in the art without inventive effort are still within the scope of protection of this invention.

Claims

1. A softening device for automotive thermoformed structural parts, comprising a device housing (1), characterized in that: The equipment housing (1) is equipped with multiple sets of lower support components (2) to facilitate the overall heating and softening of automotive thermoformed structural parts; Each lower support assembly (2) is provided with an upper support assembly (3) at the top. The structure of the upper support assembly (3) is the same as that of the lower support assembly (2), and the upper support assembly (3) and the lower support assembly (2) are mirror images of each other, which facilitates local heating and softening of automotive thermoformed structural parts. The lower support assembly (2) includes a support plate (21), the top of the support plate (21) is recessed downwards, and a support member (22) is provided at the top of the support plate (21). The automotive thermoformed structural parts are placed on the top of the support member (22) and make multi-point contact with the support member (22), which facilitates the uniform heating and softening of the automotive thermoformed structural parts. The top of the support plate (21) is provided with two sets of isolation members (23), which are respectively located on both sides of the support member (22) and are used to fix and separate different areas of the automotive thermoformed structural parts when the parts are locally heated and softened.

2. The softening equipment for automotive thermoformed structural parts according to claim 1, characterized in that: The support member (22) includes a hollow plate (221) fixed to the top of the support plate (21), and a plurality of airbags (222) are fixed to the top of the hollow plate (221), and the interior of the airbags (222) is connected to the interior of the hollow plate (221).

3. The softening equipment for automotive thermoformed structural parts according to claim 2, characterized in that: One side of the support plate (21) is fixed with an air pipe (223) that communicates with the interior of the hollow plate (221), and the air pipes (223) on two adjacent support plates (21) are connected by a pipe. An external air pipe (5) is fixed on one side of the equipment housing (1). The air pipe (223) on the outermost support plate (21) is connected to the external air pipe (5) through a pipe, which facilitates the inflation and deflation of the airbag (222).

4. The softening equipment for automotive thermoformed structural parts according to claim 2, characterized in that: The hollow plate (221) has an air hole (224) on one side that communicates with the interior of the hollow plate (221), and the support plate (21) has an air channel (225) inside. One end of the air channel (225) communicates with the air hole (224), and the other end of the air channel (225) extends to the top of the support plate (21).

5. The softening equipment for automotive thermoformed structural parts according to claim 4, characterized in that: The isolation element (23) includes a liquid bladder (231) fixed to the top of the support plate (21). Each liquid bladder (231) has a water inlet channel (232) and a drainage channel (233) connected to its bottom end. The water inlet channel (232) and the drainage channel (233) are both opened inside the support plate (21), and the ends of the water inlet channel (232) and the drainage channel (233) away from the liquid bladder (231) extend to the top of the support plate (21). The two water inlet channels (232) in the support plate (21) are connected, and the two drainage channels (233) in the support plate (21) are connected. A liquid inlet pipe (234) communicating with the inside of the water inlet channel (232) and a liquid outlet pipe (235) communicating with the inside of the drainage channel (233) are fixed on one side of the support plate (21).

6. The softening equipment for automotive thermoformed structural parts according to claim 5, characterized in that: The inlet pipes (234) on two adjacent support plates (21) and the outlet pipes (235) on two adjacent support plates (21) are connected by pipes; The equipment housing (1) has an external inlet pipe (6) and an external outlet pipe (7) fixed on one side. The liquid inlet pipe (234) on the outermost support plate (21) is connected to the external inlet pipe (6) through a pipe, and the liquid outlet pipe (235) on the support plate (21) is connected to the external outlet pipe (7) through a pipe, which facilitates the filling and emptying of all liquid bladders (231).

7. The softening equipment for automotive thermoformed structural parts according to claim 5, characterized in that: The support plate (21) has a cavity (24) at its top end and a heating chamber (25) at its bottom end. The hollow plate (221) is fixed inside the cavity (24) to seal the top end of the heating chamber (25). The cavity (24) and the heating chamber (25) are both located inside the water inlet channel (232) and the drainage channel (233). A heating device (26) is fixed inside the heating chamber (25).

8. The softening equipment for automotive thermoformed structural parts according to claim 5, characterized in that: Two mounting plates (27) are fixed on both sides of the support plate (21), and the support plate (21) can slide inside the equipment box (1). When the upper support component (3) moves to the top of the lower support component (2), the mounting plates (27) of the lower support component (2) and the upper support component (3) are fixed to achieve the fixation of the lower support component (2) and the upper support component (3), so that the lower support component (2) and the upper support component (3) can divide the equipment box (1) into multiple heating zones, thereby facilitating the local heating and softening of automotive thermoformed structural parts. When the upper support component (3) is located at the top of the lower support component (2), the air passage (225), water inlet passage (232), and drainage passage (233) on the lower support component (2) and the upper support component (3) are connected.

9. The softening equipment for automotive thermoformed structural parts according to claim 8, characterized in that: The equipment housing (1) is provided with a heating component (4) on the rear side. The heating component (4) includes a shell (41) and the equipment housing (1) has an opening that communicates with the shell (41). The shell (41) is provided with partitions (42) in the same number as the upper support component (3). Each partition (42) is fixed to the rear end of the upper support component (3) so that the partition (42) can move with the upper support component (3).

10. A softening device for automotive thermoformed structural parts according to claim 9, characterized in that: Heaters (43) are fixed on one side of each partition (42) and on one side wall inside the equipment box (1). Multiple partitions (42) divide the inside of the outer shell (41) into multiple temperature zones, and the temperature zones are connected to the heating zones inside the equipment box (1) one by one.

Images