Side wall inner plate, manufacturing device and method of side wall inner plate, side wall assembly and vehicle

Abstract

The invention discloses a side wall inner plate, a manufacturing device and method of the side wall inner plate, a side wall assembly and a vehicle. The technical problems that in the prior art, a side wall assembly is heavy, and the production process is complex are solved. The side wall inner plate is integrally formed; and at least one of the A column, the B column, the C column and the doorsill beam of the side wall inner plate is provided with a reinforcing rib. The side wall inner plate is integrally formed, lightweight production of the side wall can be achieved, in addition, reinforcing ribs are arranged on the side wall under the condition that the structure is simple, and the strength requirement of the side wall is met; the side wall inner plate is integrally formed, the production process is simple, and the cost is low.

Description

Technical Field

[0001] The present application belongs to the field of side panel technology, and specifically relates to a side panel inner panel, a manufacturing device and method thereof, a side panel assembly and a vehicle. Background Art

[0002] With the automotive industry booming, lightweighting has become a global trend. Currently, conventional vehicle side panels consist of a side panel outer panel, A-pillar inner panel, A-pillar reinforcement plate, B-pillar inner panel, B-pillar reinforcement plate, C-pillar inner panel, and C-pillar reinforcement plate. These components are all made of sheet metal. Manufacturing requires the development of molds for each component, resulting in high costs. The assembly and welding of sheet metal components is complex and labor-intensive. Furthermore, because sheet metal components are typically stamped from steel, the side panel assembly is heavy, increasing the overall vehicle weight. This increases fuel consumption and emissions, which is inconsistent with the principles of lightweighting and cost control. Summary of the Invention

[0003] In order to solve the current technical problems of heavy weight and complex production process of side panel assemblies, the present application provides a side panel inner panel and a manufacturing device and method thereof, a side panel assembly and a vehicle.

[0004] In a first aspect of the present application, there is provided a side panel inner panel, wherein the side panel inner panel is integrally formed;

[0005] At least one of the A-pillar, B-pillar, C-pillar and door sill beam of the side inner panel is provided with a reinforcing rib.

[0006] In some embodiments, the side panel inner plate is made of aluminum alloy and is integrally die-cast.

[0007] In some embodiments, the aluminum alloy includes the following components by mass fraction: Si: 4.0% to 9.0%, Fe≤0.25%; Cu≤0.05%, Mn: 0.40% to 0.85%, Mg: 0.15% to 0.30%, Ti≤0.10%, Sr: 0.01% to 0.02%, and the rest is aluminum and unavoidable impurities.

[0008] In some embodiments, the reinforcing rib is in a tic-tac-toe shape and / or an oblique triangle shape; the reinforcing rib has a draft angle, and the draft angle of the reinforcing rib is 1.5° to 3°.

[0009] In a second aspect of the present application, a manufacturing device for manufacturing the above-mentioned side inner panel is provided, comprising:

[0010] A forming mold, wherein the forming mold has a mold cavity;

[0011] A first feeding system and a second feeding system, the first feeding system and the second feeding system are both provided with a feeding pipe, the feeding pipe is communicated with the corresponding mold cavity, the first feeding system is arranged in the door opening surrounded by the A-pillar, the B-pillar, the door sill beam and the upper cross beam of the side inner panel, and the second feeding system is arranged in the door opening surrounded by the B-pillar, the C-pillar, the door sill beam and the upper cross beam.

[0012] In some embodiments, the manufacturing device further includes an overflow groove, and at least one of the outer side of the A-pillar, the outer side of the upper cross beam, the outer side of the rocker beam, and the outer side of the D-pillar is provided with an overflow groove;

[0013] The number of the overflow troughs is more than 2, and the more than 2 overflow troughs are interconnected;

[0014] The manufacturing device further includes first vacuum devices having the same number as the overflow tanks, wherein the first vacuum devices correspond to the positions of the overflow tanks and are connected to the overflow tanks;

[0015] The manufacturing device further includes a second vacuum device disposed on the material pipe.

[0016] In some embodiments, the molding die further comprises a plurality of runners and a plurality of ingates sequentially connected to the material pipe;

[0017] The plurality of ingates are communicated with a mold cavity for manufacturing the A-pillar, the B-pillar, the C-pillar, the D-pillar and / or the rocker beam.

[0018] In a third aspect of the present application, a method for manufacturing the side panel inner panel is provided. The method is implemented based on the above-mentioned side panel inner panel manufacturing device, and the manufacturing method comprises the following steps:

[0019] Liquid metal is injected into the mold cavity through the feed pipes of the first feeding system and the second feeding system; the liquid metal injected through the feed pipes of the first feeding system fills a portion of the sill beam, the A-pillar, the B-pillar, and the C-pillar; the liquid metal injected through the feed pipes of the second feeding system fills another portion of the sill beam, the B-pillar, the upper crossbeam, and the C-pillar; until the liquid metal injected through the first feed pipe and the liquid metal injected through the second feed pipe merge in the sill beam and completely fill the sill beam;

[0020] Pressurizing the molten metal in the mold cavity to shape the molten metal;

[0021] After the molten metal is formed, the mold is opened and the casting is taken out to obtain the side inner panel.

[0022] In some embodiments, before injecting molten metal into the feed pipe of the first feeding system and the feed pipe of the second feeding system, the manufacturing method further includes the following steps:

[0023] purifying the molten metal;

[0024] The molten metal is kept warm at 700°C to 720°C and allowed to stand for 5 to 15 minutes to cool the molten metal to 700°C to 720°C.

[0025] In some embodiments, injecting the molten metal into the mold cavity through the feed pipe of the first feeding system and the feed pipe of the second feeding system specifically includes:

[0026] The molten metal is introduced into the material pipe so as to be filled into the mold cavity at a first filling speed of 0.2 to 1 m / s and a second filling speed of 5.0 to 7.5 m / s.

[0027] In a fourth aspect of the present application, a side panel assembly is provided, comprising: a side panel outer panel and a side panel inner panel made of different materials, the side panel outer panel and the side panel inner panel together forming a side panel inner cavity, the side panel inner panel being the above-mentioned side panel inner panel, and the reinforcing ribs being located in the side panel inner cavity.

[0028] In a fifth aspect of the present application, a vehicle is provided, comprising the above-mentioned side panel inner panel or the above-mentioned side panel assembly.

[0029] According to one or more embodiments of the present application, the side panel inner panel, its manufacturing apparatus and method, side panel assembly, and vehicle are integrally formed, and at least one of the A-pillar, B-pillar, C-pillar, and door sill of the side panel inner panel is provided with reinforcing ribs. This integral formation of the side panel inner panel enables lightweight production of the side panel. Furthermore, the reinforcement ribs are provided while maintaining a simple structure, thereby meeting the required strength of the side panel. The integral formation of the side panel inner panel simplifies the production process and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic structural diagram of a side panel assembly in one or more embodiments of the present application is shown.

[0031] Figure 2 Shown Figure 1 Exploded view of the side panel assembly.

[0032] Figure 3 Shown Figure 1 Schematic diagram of the structure of the side inner panel.

[0033] Figure 4 Shown Figure 3 Schematic diagram of the structure of the reinforcement ribs inside the sill beam of the side inner panel.

[0034] Figure 5 Shown Figure 3 Schematic diagram of the structure of the reinforcement rib of the A-pillar of the side inner panel.

[0035] Figure 6 Shown Figure 3 Schematic diagram of the structure of the reinforcement rib of the B-pillar of the side inner panel.

[0036] Figure 7 Shown Figure 3 Schematic diagram of the structure of the reinforcement rib of the C-pillar of the side inner panel.

[0037] Figure 8 A schematic diagram of the structure of a manufacturing device in one or more embodiments of the present application is shown.

[0038] Figure 9 Shown Figure 8 Schematic diagram of the punch structure before punching.

[0039] Figure 10 Shown Figure 8 Schematic diagram of the structure after punching.

[0040] Explanation of the accompanying drawings: 100-side panel assembly, 110-side panel outer panel, 120-side panel inner panel, 121-A-pillar, 122-B-pillar, 123-C-pillar, 124-D-pillar, 125-sill beam, 126-upper cross beam, 127-reinforcement rib; 200-manufacturing device, 210-molding mold, 211-mold cavity, 212-sprue, 213-cross runner, 214-comb runner, 215-ingate, 220-first feeding system, 221-feeding pipe, 222-feeding port, 223-material cake, 230-second feeding system, 240-overflow trough, 250-first vacuum device, 260-punch. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to understand the present application more clearly, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of this application.

[0042] See also Figure 1 、 Figure 2 and Figure 3As shown, an embodiment of the first aspect of the present application provides a side inner panel, and the side inner panel 120 is integrally formed; at least one of the A-pillar 121, B-pillar 122, C-pillar 123 and the door sill beam 125 of the side inner panel 120 is provided with a reinforcing rib 127, and the reinforcing rib 127 is located in the inner cavity of the side panel.

[0043] In some embodiments, the side panel inner panel 120 can be made of aluminum alloy, which can ensure the lightweight of the vehicle body structure. In addition, the side panel inner panel 120 is formed in one piece. Compared with the existing technology, the side panel is generally made of more than 30 parts through welding. The side panel inner panel 120 of the present application is formed in one piece of aluminum alloy, which turns more than 30 parts into one part, thereby improving the high integration of the side panel inner panel 120.

[0044] In some embodiments, as Figure 3 As shown, the side inner panel 120 is composed of an A-pillar 121, a B-pillar 122, a C-pillar 123, a door sill beam 125 and an upper cross beam 126, wherein the A-pillar 121, the B-pillar 122, the door sill beam 125 and the upper cross beam 126 form a door opening; the B-pillar 122, the C-pillar 123, the door sill beam 125 and the upper cross beam 126 form another door opening.

[0045] In order to improve the safety of the side, Figure 3 As shown, in some embodiments, at least one of the A-pillar 121, B-pillar 122, C-pillar 123, and rocker beam 125 of the side panel inner panel 120 is provided with a reinforcing rib 127. To further enhance the safety of the side panel, in some embodiments, the A-pillar 121, B-pillar 122, C-pillar 123, and rocker beam 125 of the side panel inner panel 120 are all provided with a reinforcing rib 127, and the reinforcing rib 127 is located in the inner cavity of the side panel.

[0046] In some embodiments, as Figure 3 As shown, the material of the side inner panel 120 is aluminum alloy. The side inner panel 120 is made of aluminum alloy, which can ensure the lightweight of the vehicle body structure. In other embodiments, the side inner panel 120 is integrally die-cast, that is, the side inner panel 120 is integrally die-cast, which can reduce the intermediate splicing process, greatly improve the dimensional accuracy, and ensure the high precision of the side inner panel 120. Integral die-casting, one-time molding, without the complicated process of stamping first and then welding, the manufacturing process is extremely simple. There is only one part, and there is no need to develop too much tooling equipment, and there is no error accumulation caused by the connection of a large number of parts, and the manufacturing accuracy is controllable. There is no need to check the manufacturing status of each part, which not only shortens the complex vehicle body manufacturing process, but also greatly reduces the manufacturing cost of the vehicle body.

[0047] In some embodiments, as Figure 3As shown, the side panel 120 is part of the vehicle's body structure, typically connected to the roof, floor, and front and rear pillars, such as the A-pillar 121, B-pillar 122, and C-pillar 123. The main function of the side panel 120 is to provide structural support to the side of the vehicle, enhancing the vehicle's rigidity and safety, while also protecting passengers in the event of a side collision. The side panel 120 can be connected to the front and rear ends of the vehicle body, increasing the rigidity of the entire body-in-white (BIW) and effectively improving overall torsional stiffness.

[0048] In some embodiments, as Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, the reinforcement ribs 127 are in a crisscross pattern and / or an oblique triangle. To ensure structural stability, in some embodiments, the reinforcement ribs 127 on the A-pillar 121, B-pillar 122, and sill beam 125 are in a crisscross pattern. Compared to oblique rib structures, the crisscross pattern of reinforcement ribs 127 is more stable, ensuring the lightweight structure of the side inner panel 120 while maintaining overall structural stability. In other embodiments, the reinforcement ribs 127 on the C-pillar 123 are in an oblique triangle pattern, which can enhance the overall strength of this area.

[0049] In some embodiments, as Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, the reinforcing ribs 127 are solid ribs. Compared with the hollow sheet metal closed structure, the reinforcing ribs 127 of the A-pillar 121, the B-pillar 122, the C-pillar 123 and the door sill beam 125 are filled with molten metal, so that the filled solid ribs are closed solid structures, which can improve the side impact performance.

[0050] In some embodiments, as Figure 3 and Figure 4 As shown, the sill beam 125 reinforcement rib 127 is in a well shape, wherein the main rib direction is set to the positive Z direction. The arc-shaped rib is higher in the Z direction and lower in the middle. This can effectively prevent the sill from flipping around the X direction when the vehicle collides sideways, resulting in excessive intrusion and injury to passengers. The Z-direction reinforcement rib 127 is concave in the middle, which can reduce the weight. At the same time, the staggered X-direction ribs enhance the overall strength.

[0051] In some embodiments, as Figure 3 and Figure 5As shown, the reinforcement rib 127 of the A-pillar 121 is in a crisscross shape, wherein the main rib direction is the positive X-direction. The height of the reinforcement rib 127 decreases first and then increases along the X-direction. The shape is an arc-shaped structure with high sides and low middle, which can effectively cope with the frontal collision of the vehicle. The X-direction reinforcement rib 127 is concave in the middle, which can play a role in weight reduction. At the same time, there are staggered Z-direction ribs to enhance the overall strength.

[0052] In some embodiments, as Figure 3 and Figure 6 As shown, the reinforcing ribs 127 of the B-pillar 122 are in a crisscross shape. The main rib direction of the B-pillar 122 is set to the positive X direction, and the Y direction is flush. The flush ribs in the Y direction can effectively prevent the B-pillar 122 from being crushed during a side collision of the vehicle, resulting in excessive intrusion and injury to passengers. The X-direction ribs effectively improve the strength of the door fixing points fixed to the B-pillar 122, and the overall strength is improved through the Z-direction staggered ribs.

[0053] In some embodiments, as Figure 3 and Figure 7 As shown, the reinforcement rib 127 of the C-pillar 123 is an oblique triangle. Since the reinforcement rib 127 of the C-pillar 123 is an oblique triangle, it is mainly affected by the shape constraints, resulting in a smaller space. The triangular rib used is more stable and can enhance the overall strength of the area.

[0054] In some embodiments, as Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, in the side panel structure formed by the A-pillar 121, B-pillar 122, C-pillar 123, and sill beam 125, the reinforcement ribs 127 are generally oriented in the X, Y, and Z directions. For example, if the side panel is subjected to a head-on collision and / or an offset collision, an X-direction collision force will be generated on the A-pillar 121. In this case, the main rib direction of the reinforcement ribs 127 within the A-pillar 121 is in the X direction, effectively improving the side impact resistance of the A-pillar 121.

[0055] In other embodiments, Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, if the side panel is subjected to a side collision and / or a pillar collision, a Y-direction collision force will be generated in the direction of the A-pillar 121, the B-pillar 122, and the C-pillar 123. At this time, the main reinforcement direction is in the Y-direction, which effectively improves the side collision performance in the direction of the A-pillar 121, the B-pillar 122, and the C-pillar 123.

[0056] In other embodiments, for example, in a torsional stiffness test on a vehicle, since the torsional stiffness test is performed by fixing the rear wheelhouse and applying a Z-direction force to the front wheelhouse, the reinforcing ribs 127 are in a crisscross shape, and the main ribs in the directions of the A-pillars 121, B-pillars 122, and C-pillars 123 are in the X-direction, the secondary ribs in the directions of the A-pillars 121, B-pillars 122, and C-pillars 123 are in the Z-direction, which can effectively improve the Z-direction rigidity and improve the overall torsional stiffness.

[0057] In some embodiments, as Figure 3 As shown, the A-pillar 121 , the B-pillar 122 , the C-pillar 123 , the upper crossbeam 126 and the threshold beam 125 are combined to form a U-shape or a R-shape, and the door ring structure is an annular structure with a stable structure.

[0058] In some embodiments, the aluminum alloy comprises the following components, by mass: Si: 4.0% to 9.0%, Fe ≤ 0.25%; Cu ≤ 0.05%, Mn: 0.40% to 0.85%, Mg: 0.15% to 0.30%, Ti ≤ 0.10%, Sr: 0.01% to 0.02%, with the remainder being aluminum and unavoidable impurities. Adding elements such as Si, Fe, Mg, and Cu to the alloy forms a hypoeutectic, eutectic, or hypereutectic alloy, exhibiting excellent comprehensive mechanical properties.

[0059] In other embodiments, as shown in the attached Figure 3 As shown, in order to prevent the root of the reinforcement rib 127 from being too thick and ensure that the part is smoothly demolded during the one-piece casting, the reinforcement rib 127 has a draft angle, and the draft angle of the reinforcement rib 127 is 1.5° to 3°, wherein the draft angle of the reinforcement rib 127 can be 1.5°, 1.7°, 1.9°, 2.1°, 2.5°, 2.8° or 3°.

[0060] See also Figure 8 、 Figure 9 and Figure 10As shown, the second embodiment of the present application provides a manufacturing device 200 for a side panel inner panel 120, which is applied to the side panel assembly 100 as described above, including a forming mold 210, a first feeding system 220 and a second feeding system 230, wherein the forming mold 210 has a mold cavity 211; the material pipe 221 is connected to the corresponding mold cavity 211, the first feeding system 220 is arranged in a door opening surrounded by the A-pillar 121, the B-pillar 122, the door sill beam 125 and the upper cross beam 126 of the side panel inner panel 120, and the second feeding system 230 is arranged in a door opening surrounded by the B-pillar 122, the C-pillar 123, the door sill beam 125 and the upper cross beam 126. The first feeding system 220 and the second feeding system 230 are respectively arranged in the two door openings of the side panel, which can ensure that the structure of the side panel inner panel 120 can be smoothly formed and produced by a die-casting process. In the die-casting process, the molten metal can flow into the mold cavity 211 through the material pipe 221 of the first feeding system 220 to form the A-pillar 121, the B-pillar 122, part of the upper cross beam 126 and part of the door sill beam 125. The molten metal can flow into the mold cavity 211 through the material pipe 221 of the second feeding system 230 to form the B-pillar 122, the C-pillar 123, part of the upper cross beam 126 and part of the door sill beam 125.

[0061] In some embodiments, as Figure 8 、 Figure 9 and Figure 10 As shown, the diameter of the material tube 221 is generally 200-350 mm, which can be 200 mm, 220 mm, 265 mm, 300 mm, 319 mm, 334 mm or 350 mm. The molten metal can flow smoothly through the material tube 221 into the mold cavity 211 to ensure the smooth molding of the side inner panel 120 structure.

[0062] In order to reduce the formation of defects in the die casting process, such as Figure 8 、 Figure 9 and Figure 10 As shown, in some embodiments, the manufacturing apparatus 200 further includes an overflow trough 240. The overflow trough 240 is provided on at least one of the outer sides of the A-pillar 121, the outer side of the upper cross beam 126, the outer side of the door sill beam 125, and the outer side of the D-pillar 124. Since two streams of molten metal tend to merge at the B-pillar, which may result in defects, in some embodiments, there are two or more overflow troughs 240, which are interconnected. One overflow trough 240 is located on the outer side of the upper cross beam 126 and at the upper end of the B-pillar 122; another overflow trough 240 is located on the outer side of the door sill beam 125 and at the lower end of the B-pillar 122. During the die-casting process, by arranging the overflow troughs 240 at both the upper and lower ends of the B-pillar 122, slag inclusions and air entrainment generated during the die-casting process can be collected.

[0063] In some embodiments, the manufacturing apparatus 200 further includes a first vacuum device 250, the number of which is equal to the number of overflow tanks 240. The first vacuum devices 250 correspond to and are connected to the overflow tanks 240. The first vacuum devices 250 communicate with the overflow tanks 240 and, during the vacuuming phase, can expel gas from the mold cavity 211 as quickly as possible, thereby expediting air discharge and reducing air entrapment. In some embodiments, four first vacuum devices 250 are provided, each positioned around the perimeter of the forming mold 210. The first vacuum devices 250 are mounted on the mold, and a silicone seal is provided between the vacuum device and the mold. Generally, after the punch 260 passes through the discharge port, a hydraulic valve is opened to apply vacuum. When the punch 260 is substantially filled, the hydraulic valve is closed to terminate the vacuuming.

[0064] In some embodiments, as Figure 8 、 Figure 9 and Figure 10 As shown, the connection portion between the overflow groove 240 and the part body, also referred to as the "neck" or "transition zone" of the overflow groove 240, has a thickness of 2-3 mm to reduce slag inclusion and air entrapment.

[0065] In some embodiments, as Figure 8 、 Figure 9 and Figure 10 As shown, in order to reduce the oxidation and air entrainment of the molten metal and improve the performance of the parts during the molten metal filling process, the cavity can be vacuumed, wherein the vacuum pressure can be an ultra-high vacuum of 30 to 50 mbar, which can be 30 mbar, 34 mbar, 37 mbar, 41 mbar, 45 mbar, 48 mbar or 50 mbar.

[0066] In some embodiments, as Figure 8 、 Figure 9 and Figure 10 As shown, the manufacturing device 200 also includes a second vacuum device (not shown) located in the material pipe 221. The second vacuum device is installed in the material pipe 221. During the die-casting process, when the punch 260 of the die-casting machine passes through the pouring port, vacuuming is initiated. When the punch 260 passes through the vacuum pumping channel of the first material pipe 221 and the vacuum pumping channel of the second material pipe 221, the vacuum system of the first material pipe 221 and the vacuum system of the second material pipe 221 are both shut down. When the molten aluminum is about to fill the slag ladle near the vacuum system, the altered vacuum system is shut down. This not only prolongs the vacuuming time but also reduces the possibility of the molten aluminum clogging the vacuum system.

[0067] Therefore, by installing vacuum devices on the material pipe 221 and the mold, oxidation and air entrapment of the molten metal can be reduced during the molten metal filling process, thereby improving the performance of the part.

[0068] In some embodiments, as Figure 8 、 Figure 9 and Figure 10 As shown, the manufacturing device 200 further includes a plurality of runners and a plurality of ingates 215 sequentially connected to the material pipe 221. The runner configuration varies depending on the runner location. In some embodiments, the runners include a sprue 212, a runner 213, a comb-shaped runner 214, and an ingate 215. The sprues 212 are arranged circumferentially along the first material pipe 221; the runners 213 extend radially along the first material pipe 221 and / or the second material pipe 221; the runners 213 are spaced apart, and the comb-shaped runners 214 are located at the intervals. This ensures that the molten metal can flow evenly within the mold cavity 211.

[0069] In some embodiments, as Figure 8 、 Figure 9 and Figure 10 As shown, several inner gates 215 are connected to the mold cavity 211 used to manufacture the A-pillar 121, the B-pillar 122, the C-pillar 123, the D-pillar 124 and / or the rocker beam 125; this can ensure that the molten metal can evenly and efficiently fill the mold cavity 211, ensuring that the A-pillar 121, the B-pillar 122, the C-pillar 123, the D-pillar 124 and the rocker beam 125 are formed.

[0070] In some embodiments, the punch 260, runner 213, and ingates 215 of the manufacturing apparatus 200 are interconnected and have decreasing areas. The ratio of the cross-sectional area of ​​the punch 260 to the cross-sectional area of ​​the runner 213 is 15-20:1, and the ratio of the cross-sectional area of ​​the runner 213 to the cross-sectional area of ​​the ingates 215 is 1.4-2.0:1. This ensures that the molten metal is evenly delivered to each ingates 215, while also ensuring that the molten metal flowing into the mold cavity 211 covers as much surface area as possible, depending on the actual part structure.

[0071] In some embodiments, a dual-channel injection molding system can be used to fill the casting. The two channels each contain a punch 260, a sprue 212, a runner 213, a comb-shaped runner 214, and an ingate 215. The sprue 212 connects the pressure chamber to the runner 213. Each channel has multiple sprues 212, followed by a runner 213. The runner 213 is divided into multiple comb-shaped runners that connect to the part, and the connection point is the ingate 215. The diameter of the punch 260 is generally 200-350mm. The cross-sectional area of ​​the molten aluminum decreases continuously from the punch 260 to the sprue 212, to the runner 213, to the comb runner 214, and to the ingate 215. The cross-sectional area of ​​the punch 260 / the cross-sectional area of ​​the runner 213 is 15-20; the cross-sectional area of ​​the runner 213 / the cross-sectional area of ​​the ingate 215 is 1.4-2.0. The molten metal is transported to each ingate 215 as evenly as possible, and the coverage area of ​​the molten metal flowing into the mold cavity is as large as possible. According to the actual part structure, the molten aluminum first enters the ingate 215 from two material pipes 221 respectively. The molten aluminum in the first material pipe 221 fills the A-pillar 121 and the B-pillar 122. , and the C-pillar 123 are filled, and then the door sill beam 125 is filled. The aluminum liquid in the second material pipe 221 enters from the ingate 215 of the B-pillar 122, the upper beam and the C-pillar 123, and finally flows through the door sill beam 125 to fill the door sill beam. The aluminum liquid will eventually interrupt the filling at the door sill beam 125 and complete the filling. At the same time, the aluminum liquid will also flow to the D-pillar 124 through the upper crossbeam 126 and the C-pillar 123 to fill the rear end. The filling can be carried out simultaneously or in sequence, so as to control the filling order of the parts and the position where the aluminum liquid converges. At the same time, the filling weight of the aluminum liquid filled in the two channels can also be adjusted according to the structural characteristics of the parts, so as to control the filling and convergence position of the aluminum liquid.

[0072] In a third embodiment of the present application, a method for manufacturing the side panel inner panel 120 is provided. The method is implemented based on the manufacturing device 200 of the side panel inner panel 120. The method includes the following steps:

[0073] Liquid metal is injected into the mold cavity 211 through the material pipe 221 of the first feeding system 220 and the material pipe 221 of the second feeding system 230. The liquid metal injected through the material pipe 221 of the first feeding system 220 fills part of the sill beam 125, the A-pillar 121, the B-pillar 122, and the C-pillar 123. The liquid metal injected through the material pipe 221 of the second feeding system 230 fills another part of the sill beam 125, the B-pillar 122, the upper cross member 126, and the C-pillar 123. The molten metal is continuously injected until the liquid metal injected through the material pipe 221 of the first feeding system 220 and the liquid metal injected through the material pipe 221 of the second feeding system 230 merge in the sill beam 125 and completely fill the sill beam 125.

[0074] In some embodiments, as shown in the attached Figure 9 and attached Figure 10As shown, the aluminum liquid enters the material pipe 221 through the feed port 222, and then the punch 260 moves forward to push the aluminum liquid into the mold cavity. The aluminum liquid solidifies in the mold cavity to form a part. After solidification, the place where the part contacts the punch 260 forms a material cake 223.

[0075] Pressurizing the molten metal in the mold cavity 211 to shape the molten metal;

[0076] After the molten metal is formed, the mold is opened and the casting is taken out to obtain the side inner panel 120.

[0077] In some embodiments, before injecting molten metal into the feed pipe 221 of the first feeding system 220 and the feed pipe 221 of the second feeding system 230 , the manufacturing method further includes the following steps:

[0078] Purify the molten metal;

[0079] The molten metal may be molten aluminum. In some embodiments, a refining agent and rotary degassing may be used to purify the molten aluminum. Refining agent purification and rotary degassing are often used in combination to achieve better purification effects. The molten aluminum is first chemically purified using a refining agent to remove most impurities and gases. Rotary degassing is then used to further remove residual gases, ensuring the purity of the molten metal and thereby improving the quality of the casting.

[0080] Keeping the molten metal at a temperature of 700° C. to 720° C. and allowing it to stand for 5 to 15 minutes to cool down to 700° C. to 720° C.;

[0081] During the static process, dross and bubbles in the molten aluminum will float up and be removed, which also helps to even out the temperature of the molten aluminum, keeping the molten aluminum within a suitable temperature range for subsequent pouring operations.

[0082] The molten metal is kept at a constant temperature to achieve the purpose of cooling. When the temperature of the molten metal drops to 700°C to 720°C, the molten metal is injected into the material pipe 221. The temperature of the molten aluminum is lowered to 700°C to 720°C, which can be 700°C, 710°C, 715°C, or 720°C. This temperature is suitable for aluminum liquid casting, which can ensure the fluidity of the molten aluminum while preventing defects such as thermal cracking in the casting caused by excessive temperature.

[0083] In some embodiments, injecting molten metal into the mold cavity 211 through the first material pipe 221 and the second material pipe 221 specifically includes:

[0084] Molten metal is introduced into the first and second feed pipes 221, so that it fills the mold cavity 211 at a first filling speed of 0.2-1 m / s and a second filling speed of 5.0-7.5 m / s. In certain embodiments, the casting machine's punch 260 fills the mold cavity 211 with molten aluminum at a speed of 0.2-1 m / s, which may be 0.2 m / s, 0.5 m / s, 0.8 m / s, or 1 m / s. When the molten aluminum passes through the ingate 215, the punch 260 rapidly fills the mold cavity with molten aluminum at a speed of 5.0-7.5 m / s, which may be 5.0 m / s, 5.7 m / s, 6.8 m / s, or 7.5 m / s. This improves the fluidity of the molten aluminum and ensures that it quickly fills the mold cavity.

[0085] In a fourth aspect of the present application, a side panel assembly is provided. The side panel assembly 100 includes a side panel outer panel 110 and a side panel inner panel 120. The side panel outer panel 110 and the side panel inner panel 120 are respectively made of different materials. The side panel outer panel 110 and the side panel inner panel 120 together form a side panel inner cavity, and the reinforcing rib 127 is located in the side panel inner cavity.

[0086] In some embodiments, the side outer panel 110 may be made of steel, which can ensure the rigidity and durability of the vehicle body and also ensure the appearance of the side outer panel 110 .

[0087] In the fifth aspect of the present application, a vehicle is provided, comprising the above-mentioned side panel inner panel 120 or the above-mentioned side panel assembly 100. The vehicle adopts all the structures of the above-mentioned side panel inner panel 120 or the side panel assembly 100. Since all the technical solutions of all the above-mentioned embodiments are adopted, the vehicle at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0088] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0089] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0090] In this application, unless otherwise specified or limited, the terms "connect," "fix," etc. should be understood broadly. For example, "fix" can mean fixed connection, detachable connection, or integration; it can mean mechanical connection or electrical connection; it can mean direct connection or indirect connection through an intermediate medium; it can mean internal communication between two elements or interaction between two elements. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0091] In addition, the terms "first," "second," and so on, used in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0092] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A side inner panel, characterized in that: The side inner panel is integrally formed; At least one of the A-pillar, B-pillar, C-pillar and door sill beam of the side inner panel is provided with a reinforcing rib.

2. The side inner panel according to claim 1, characterized in that: The side panel inner plate is made of aluminum alloy and is integrally die-cast.

3. The side inner panel according to claim 2, characterized in that: The aluminum alloy includes the following components by mass fraction: Si: 4.0% to 9.0%, Fe≤0.25%; Cu≤0.05%, Mn: 0.40% to 0.85%, Mg: 0.15% to 0.30%, Ti≤0.10%, Sr: 0.01% to 0.02%, and the rest is aluminum and inevitable impurities.

4. The side inner panel according to any one of claims 1 to 3, characterized in that: The reinforcing ribs are in a tic-tac-toe shape and / or an oblique triangle shape; the reinforcing ribs have a draft angle, and the draft angle of the reinforcing ribs is 1.5° to 3°.

5. A manufacturing device for manufacturing the side inner panel according to any one of claims 1 to 4, characterized in that: include: A molding die, wherein the molding die has a mold cavity; A first feeding system and a second feeding system, wherein the first feeding system and the second feeding system are both provided with a feeding pipe, and the feeding pipe is communicated with the corresponding mold cavity. The first feeding system is arranged in a door opening surrounded by the A-pillar, the B-pillar, the door sill beam and the upper cross beam of the side inner panel, and the second feeding system is arranged in a door opening surrounded by the B-pillar, the C-pillar, the door sill beam and the upper cross beam.

6. The manufacturing device according to claim 5, characterized in that: The manufacturing device further includes an overflow groove, and at least one of the outer side of the A-pillar, the outer side of the upper cross beam, the outer side of the door sill beam and the outer side of the D-pillar is provided with an overflow groove; The number of the overflow grooves is more than 2, and the more than 2 overflow grooves are interconnected; The manufacturing device further includes first vacuum devices having the same number as the overflow tanks, the first vacuum devices corresponding to the positions of the overflow tanks and connected to the overflow tanks; The manufacturing device also includes a second vacuum device arranged on the material pipe.

7. The manufacturing device according to claim 5 or 6, characterized in that: The molding die also includes a plurality of runners and a plurality of inner gates which are sequentially connected to the material pipe; The plurality of ingates are communicated with a mold cavity for manufacturing the A-pillar, the B-pillar, the C-pillar, the D-pillar and / or the rocker beam.

8. A method for manufacturing the side inner panel according to any one of claims 1 to 4, characterized in that: Based on the manufacturing device described in any one of claims 5 to 7, the manufacturing method comprises the following steps: Injecting molten metal into the mold cavity through the feed pipe of the first feeding system and the feed pipe of the second feeding system; the molten metal injected through the feed pipe of the first feeding system fills part of the sill beam, the A-pillar, the B-pillar, and the C-pillar; the molten metal injected through the feed pipe of the second feeding system fills another part of the sill beam, the B-pillar, the upper cross beam, the C-pillar, and the like; until the molten metal injected from the material pipe of the first feeding system and the molten metal injected from the material pipe of the second feeding system are gathered in the threshold beam and the molten metal fills the threshold beam; Pressurizing the molten metal in the mold cavity to shape the molten metal; After the molten metal is formed, the mold is opened to take out the casting to obtain the side inner panel.

9. The manufacturing method according to claim 8, characterized in that: Before injecting molten metal into the feed pipe of the first feeding system and the feed pipe of the second feeding system, the manufacturing method further comprises the following steps: Purifying the molten metal; The molten metal is kept warm at 700°C to 720°C and allowed to stand for 5 to 15 minutes to cool the molten metal to 700°C to 720°C.

10. The manufacturing method according to claim 9, characterized in that: The step of injecting the molten metal into the mold cavity through the feed pipe of the first feed system and the feed pipe of the second feed system specifically includes: The molten metal is introduced into the material pipe so as to be filled into the mold cavity at a first filling speed of 0.2 to 1 m / s and a second filling speed of 5.0 to 7.5 m / s.

11. A side panel assembly, characterized in that: include: A side enclosure outer panel and a side enclosure inner panel are made of different materials, wherein the side enclosure outer panel and the side enclosure inner panel together form a side enclosure inner cavity, the side enclosure inner panel is the side enclosure inner panel according to any one of claims 1 to 4, and the reinforcing rib is located in the side enclosure inner cavity.

12. A vehicle, characterized in that: It comprises the side panel inner panel as described in any one of claims 1 to 4 or the side panel assembly as described in claim 11.

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