Decorative shield and mold

Abstract

The application relates to a decorative guard plate and a mold, which comprise a guard plate body and a guard plate flange, the guard plate flange comprises a movable flange and a fixed flange, the fixed flange is fixed on the guard plate body, and the movable flange is hinged to the guard plate body through a hinge structure; wherein the movable flange has a first state and a second state, when the movable flange is in the first state, the movable flange is unfolded and separated from the fixed flange, and when the movable flange is in the second state, the movable flange is folded and connected with the fixed flange. In the application, the movable flange is unfolded and in the first state when the decorative guard plate is injection molded, therefore, when the structure size of the guard plate is lengthened, the guard plate flange ejection will not collide with the mold, the movable flange is in the second state and folded and fixed with the fixed flange after ejection, and a complete guard plate flange is formed, the arrangement of the structure greatly improves the design freedom of the decorative guard plate, and ensures that the decorative guard plate plays a quality or performance advantage.

Description

Technical Field

[0001] This application relates to the field of automotive products, and in particular to a decorative protective panel and mold. Background Technology

[0002] To meet the increasingly demanding performance requirements of automotive products, interior and exterior injection molded products require complex structures to ensure product quality. Secondary ejection is a mold release mechanism for injection molds designed for complex product structures and to solve the problem of product undercutting, but its use is often subject to strict limitations.

[0003] The decorative guard plate has an undercut in the Z-direction, necessitating a secondary ejection demolding process. However, the product structure must be compromised based on mold manufacturing requirements. For instance, if the guard plate structure needs to be lengthened, the minimum thickness of the ejector block on the mold may not meet the mold's basic strength requirements. Therefore, to ensure mold strength, the ejector block needs to be thickened. However, after thickening the ejector block, the guard plate's flange will collide with it during ejection, causing product damage. This demonstrates that in a secondary ejection mechanism, the length of the guard plate structure is limited by mold strength and cannot be increased according to product quality or performance design requirements, presenting significant limitations. Summary of the Invention

[0004] This application provides a decorative guard plate and a mold to solve the problem in the related art where the length of the guard plate structure is affected by the strength of the mold, and cannot be lengthened according to product quality or performance design requirements, which has great limitations.

[0005] To achieve the above objectives, the present invention provides the following technical solution: In a first aspect, a decorative guard panel is provided, comprising: a guard panel body and a guard panel flange, wherein the guard panel flange includes a movable flange and a fixed flange, the fixed flange is fixed to the guard panel body, and the movable flange is hinged to the guard panel body via a hinge structure; wherein the movable flange has a first state and a second state, when the movable flange is in the first state, the movable flange unfolds and separates from the fixed flange, and when the movable flange is in the second state, the movable flange folds and connects to the fixed flange.

[0006] In some embodiments, the movable flange is provided with a positioning element, and the fixed flange is provided with a mating element; when the movable flange is in the second state, the positioning element and the mating element are connected.

[0007] In some embodiments, the positioning element is a first extension plate extending from the movable flange to the fixed flange side, and the mating element is a second extension plate extending from the fixed flange to the movable flange side, wherein the first extension plate and the second extension plate are fitted together.

[0008] In some embodiments, the first extension plate has a first upper hole, and the second extension plate has a second upper hole, and the first extension plate and the second extension plate are riveted together through the first upper hole and the second upper hole.

[0009] In some embodiments, the first extension plate forms a first stepped structure on the movable flange, and the second extension plate forms a second stepped structure on the fixed flange that matches the first stepped structure.

[0010] In some embodiments, the hinge structure has a thickness L1, wherein L1 is 1 ± 0.2 mm;

[0011] The hinge structure has a length L2, which is 2.5mm-3.5mm.

[0012] In some embodiments, one end of the hinge structure is connected to the guard plate body, and the other end of the hinge structure is connected to the movable flange. The connection between the hinge structure and the movable flange and the connection between the hinge structure and the guard plate body both form a rounded corner with a radius of 1mm-2mm.

[0013] Secondly, a mold is provided, comprising: a front mold and a rear mold, wherein after the front mold and the rear mold are assembled, a decorative guard plate injection space is formed between the rear mold and the front mold, the decorative guard plate injection space including a guard plate space, a hinge space and a flange space, the flange space including a movable flange space and a fixed flange space, the hinge space being located between the guard plate space and the movable flange space and communicating with the guard plate space and the movable flange space, the fixed flange space communicating with the guard plate space, the movable flange space extending away from the guard plate space, and the fixed flange space extending towards the guard plate space.

[0014] In some embodiments, the mold further includes an inclined ejector, which is movably connected to the rear mold and is located at the bottom of the guard plate space and on one side of the fixed flange space.

[0015] In some embodiments, water channels are provided inside both the front mold and the rear mold, and the water channels are parallel to the length extension direction of the hinge space; or, a first gate and a second gate are provided on the front mold, the first gate and the second gate are located on both sides of the hinge space, and the length extension direction of the hinge space is perpendicular to the flow direction of the rubber material.

[0016] The beneficial effects of the technical solution provided in this application include:

[0017] This application provides a decorative guard plate and a mold. The movable flange unfolds during the injection molding of the decorative guard plate and is in a first state. Therefore, when the guard plate structure is lengthened, the flange will not collide with the mold when it is ejected. By hinged to the movable flange and the guard plate body through a hinge structure, the ejected movable flange is folded and fixed with the fixed flange in a second state to form a complete guard plate flange. The design of this structure greatly improves the design freedom of the decorative guard plate and ensures that the decorative guard plate can exert its quality or performance advantages. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a decorative panel in the prior art;

[0020] Figure 2 for Figure 1 Sectional view of AA;

[0021] Figure 3 for Figure 1 AA sectional view and mold structure schematic diagram;

[0022] Figure 4 for Figure 1 Cross-sectional view of BB and schematic diagram of mold structure;

[0023] Figure 5 This is a schematic diagram of a single ejection of the mold in the prior art (at point AA);

[0024] Figure 6 This is a schematic diagram of a single ejection of the mold (at point BB) in the prior art;

[0025] Figure 7 This is a schematic diagram of secondary ejection of the mold (at point AA) in the prior art;

[0026] Figure 8 This is a schematic diagram of the mold structure after the protective plate structure size is lengthened in the existing technology;

[0027] Figure 9 This is a schematic diagram of the secondary ejection of the mold after the guard plate structure is lengthened in the existing technology;

[0028] Figure 10 This is a schematic diagram of the first state structure of the active flange provided in an embodiment of this application;

[0029] Figure 11 for Figure 10CC section view;

[0030] Figure 12 A schematic diagram of the hinge structure provided in an embodiment of this application;

[0031] Figure 13 This is a schematic diagram of the second state of the active flange provided in an embodiment of this application;

[0032] Figure 14 for Figure 13 DD section view;

[0033] Figure 15 A cross-sectional view of the mold provided in an embodiment of this application;

[0034] Figure 16 This is a schematic diagram of the hinge structure and water channel structure provided in the embodiments of this application;

[0035] Figure 17 Top views of the first gate and the second gate provided in the embodiments of this application;

[0036] Figure 18 for Figure 17 Enlarged view of a section at point E in the middle.

[0037] In the diagram: 1. Protective plate body; 2. Protective plate flange; 20. Movable flange; 21. Positioning component; 210. First upper hole; 22. Fixed flange; 23. Mating component; 230. Second upper hole; 3. Hinge structure; 4. Protective plate structure; 5. Front mold; 50. First gate; 51. Second gate; 6. Rear mold; 7. Injection space for decorative protective plate; 70. Hinge space; 71. Injection space for protective plate structure; 72. Movable flange space; 8. Water channel; 9. Straight ejector block; 10. Straight ejector rod; 11. Angled ejector; 12. Ejector pin. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0039] This application provides a decorative guard plate and a mold, which can solve the problem in related technologies where the length of the guard plate structure is affected by the strength of the mold and cannot be lengthened according to product quality or performance design requirements, resulting in significant limitations.

[0040] To meet the increasingly demanding performance requirements of automotive products, interior and exterior injection molded products require complex structures to ensure product quality. Secondary ejection is a mold release mechanism for injection molds designed for complex product structures and to solve the problem of product undercutting, but its use is often subject to strict limitations.

[0041] The decorative guard plate has a backlash 2 in the Z-direction, and a guard plate structure 4 is also provided on the decorative guard plate. Therefore, a secondary ejection demolding method is required. However, the product structure needs to be compromised according to the mold manufacturing requirements. For example, if the size of the guard plate structure 4 on the decorative guard plate needs to be increased, the minimum thickness of the ejector block 9 on the mold will not meet the basic strength requirements of the mold. Therefore, to ensure the strength of the mold, the size of the ejector block 9 needs to be increased. However, after the ejector block 9 is increased, the guard plate flange 2 will collide with the ejector block 9 during ejection, causing product damage. It can be seen that in the secondary ejection mechanism, the length of the guard plate structure 4 is affected by the mold strength and cannot be increased according to the product quality or performance design requirements, which has great limitations.

[0042] First, it should be noted that secondary ejection is a demolding mechanism for injection molds that solves the problem of product undercuts. During injection molding, products without undercuts usually only require one ejection to complete the part removal; complex products require a secondary ejection mechanism, in which the undercut is removed during the first ejection and the part is removed during the second ejection.

[0043] In the prior art, decorative panels such as Figure 1 As shown, Figure 2 For this decorative panel in Figure 1 The cross section at section AA shows that the decorative guard plate includes the guard plate body 1 and the guard plate flange 2. The guard plate flange 2 has an undercut in the Z direction. At the same time, the decorative guard plate is also provided with guard plate structure 4. Therefore, secondary ejection demolding is required.

[0044] Secondary ejection mechanism such as Figure 3 and Figure 4 As shown, the secondary ejection mechanism includes a rear mold 6, a straight ejector block 9, an angled ejector 11, an ejector pin 12, and a straight ejector rod 10. The top end of the straight ejector rod 10 is fixedly connected to the straight ejector block 9, and the ejector pin 12, the straight ejector rod 10, and the angled ejector 11 are all movably connected to the rear mold 6. A secondary ejection mechanism includes at least two angled ejectors 11: of the two angled ejectors 11, one angled ejector 11 is as follows... Figure 3 As shown, a straight abutment block 9 is also provided between the protective plate structure 4 and the inclined top 11, located at the bottom of the protective plate structure 4; another inclined top 11 is as shown... Figure 4 The bottom of the decorative panel where the panel structure 4 is not provided is shown, and the top of the sloping top 11 is attached to the bottom of the decorative panel.

[0045] The state of the secondary ejection mechanism after the first ejection is as follows: Figure 5 and Figure 6As shown, after the first ejection, the inclined ejector 11 completes the undercut demolding at the flange 2 of the guard plate; after the first ejection, the guard plate structure at point 4 needs to be ejected a second time by ejector pin 12, and the state after the second ejection is as follows. Figure 7 As shown, it is important to note that during the ejection process, the guard plate flange 2 must not collide with the straight ejector block 9 to avoid damage to the parts. Therefore, a safety gap X needs to be reserved between the guard plate flange 2 and the straight ejector block 9, wherein the safety gap X is greater than or equal to 5mm.

[0046] like Figure 8 As shown, if the dimension H1 of the guard plate structure 4 needs to be lengthened, and the dimension of the ejector block 9 remains unchanged, then the minimum thickness dimension H2 of the ejector block 9 (the gap between the bottom end of the ejector block 9 and the bottom end of the guard plate structure 4) will not meet the basic strength requirements of the mold; therefore, in order to ensure the strength of the mold, the minimum thickness dimension H2 of the ejector block 9 needs to be increased to H3. Figure 9 As shown, when the minimum thickness of the straight-top block 9 is increased to H3, the flange 2 of the guard plate will collide with the straight-top block 9 when it is pushed out, causing damage to the product.

[0047] It is evident that in the aforementioned secondary ejection mechanism, the length of the guard plate structure 4 dimension H1 is affected by the mold strength and cannot be lengthened according to product quality or performance design requirements, which has significant limitations.

[0048] Therefore, the length of the protective plate structure in dimension 4 is limited by the mold strength, preventing it from being extended according to product quality or performance design requirements, thus presenting a significant limitation. For example... Figure 10 As shown, in a first aspect, embodiments of this application provide a decorative guard plate, which includes: a guard plate body 1 and a guard plate flange 2. The guard plate flange 2 includes a movable flange 20 and a fixed flange 22. The fixed flange 22 is fixed to the guard plate body 1, and the movable flange 20 is hinged to the guard plate body 1 through a hinge structure 3. The movable flange 20 has a first state and a second state. When the movable flange 20 is in the first state, the movable flange 20 unfolds and separates from the fixed flange 22. When the movable flange 20 is in the second state, the movable flange 20 folds and connects to the fixed flange 22.

[0049] In this application, as shown in the figure, the movable flange 20 unfolds during the injection molding of the decorative guard plate and is in the first state. Therefore, when the size of the guard plate structure 4 is lengthened, the flange 2 will not collide with the mold when it is ejected. This is achieved by hinged connection between the movable flange 20 and the guard plate body 1 via the hinge structure 3. Figure 13 As shown, the movable flange 20 after being ejected is folded and fixed with the fixed flange 22 in the second state to form a complete protective plate flange 2. The setting of this structure greatly improves the design freedom of the decorative protective plate and ensures that the decorative protective plate can give full play to its quality or performance advantages.

[0050] It should be noted that: the guard plate structure 4 can be a screw post, positioning pin, reinforcing rib, etc. on the decorative guard plate.

[0051] The movable flange 20 is located on one side of the protective plate structure 4. Before ejection after injection molding, the movable flange 20 is in its first state, unfolded and separated from the fixed flange 22. A clearance area is formed at the movable flange 20 to avoid the mold, ensuring that the decorative protective plate is on one side of the protective plate structure 4 and has no undercuts in the demolding direction. Therefore, when the decorative protective plate is ejected, no matter how long the size of the protective plate structure 4 is increased, the flange 20 will not collide with the mold. After the decorative protective plate is ejected, the movable flange 20 is placed in its second state, folded and connected to the fixed flange 22. At this time, the top and bottom ends of the movable flange 20 are coplanar with the top and bottom ends of the fixed flange 22, respectively.

[0052] Furthermore, a positioning element 21 is provided on the movable flange 20, and a mating element 23 is provided on the fixed flange 22; when the movable flange 20 is in the second state, the positioning element 21 is connected to the mating element 23.

[0053] In this embodiment, the positioning member 21 is a first extension plate extending from the movable flange 20 toward the fixed flange 22, and the mating member 23 is a second extension plate extending from the fixed flange 22 toward the movable flange 20. The first extension plate and the second extension plate are fitted together. In order to make the top and bottom ends of the movable flange 20 coplanar with the top and bottom ends of the fixed flange 22 after the movable flange 20 is connected to the fixed flange 22, the first extension plate is provided to form a first stepped structure on the movable flange 20, that is, the thickness of the first extension plate is less than the thickness of the movable flange 20. The second extension plate forms a second stepped structure on the fixed flange 22 that matches the first stepped structure, that is, the thickness of the second extension plate is less than the thickness of the fixed flange 22.

[0054] In some possible embodiments, the first extension plate and the second extension plate are fixed by adhesive bonding;

[0055] In some other possible embodiments, a first upper hole 210 is provided on the first extension plate, and a second upper hole 230 is provided on the second extension plate. Specifically, since the decorative panel is injection molded, a column is provided at a corresponding position in the mold so that after the first and second extension plates are injection molded, the first upper hole 210 is formed on the first extension plate, and the second upper hole 230 is formed on the second extension plate. The first and second extension plates are riveted together through the first upper hole 210 and the second upper hole 230, that is, the same rivet passes through the first upper hole 210 and the second upper hole 230 to connect the first and second extension plates.

[0056] In other possible embodiments, a protrusion is provided on the first extension plate, and a groove is provided on the second extension plate. When the protrusion engages with the groove, the first extension plate and the second extension plate are connected. Therefore, a groove is provided at a corresponding position in the mold to injection mold the protrusion on the first extension plate; and a protrusion is provided at a corresponding position in the mold to injection mold the groove on the second extension plate.

[0057] The above embodiments are merely various possible implementations of the embodiments of this application, and the embodiments of this application are not limited thereto.

[0058] Hing structure 3 utilizes the good toughness of PP and PE plastics to give the decorative panel a foldable property. Based on the above embodiments, in this embodiment, as... Figure 12 As shown, since the hinge structure 3 needs to ensure appropriate strength and toughness, the hinge structure 3 is provided with a thickness L1, where L1 is 1±0.2mm; in order to ensure the folding angle and put the movable flange 20 in the second state, the movable flange 20 and the fixed flange 22 are coplanar, the hinge structure 3 is provided with a length L2, where L2 is 2.5mm-3.5mm.

[0059] One end of the hinge structure 3 is connected to the guard plate body 1, and the other end of the hinge structure 3 is connected to the movable flange 20. Both the connection between the hinge structure 3 and the movable flange 20 and the connection between the hinge structure 3 and the guard plate body 1 form a rounded corner. To prevent stress concentration from causing the connection between the hinge structure 3 and the movable flange 20 and the guard plate body 1 to fold and break, the rounded corner radius R is set to 1mm-2mm.

[0060] Secondly, this application provides a mold comprising a front mold 5 and a rear mold 6. After the front mold 5 and the rear mold 6 are assembled, a decorative protective plate injection space 7 is formed between the rear mold 6 and the front mold 5. The decorative protective plate injection space 7 includes a protective plate space, a hinge space 70, and a flange space. The flange space includes a movable flange space 72 and a fixed flange space. The hinge space 70 is located between the protective plate space and the movable flange space 72 and is connected to both the protective plate space and the movable flange space 72. The fixed flange space is connected to the protective plate space. The movable flange space 72 extends away from the protective plate space, and the fixed flange space extends towards the protective plate space.

[0061] In this application, such as Figure 15 As shown, the movable flange 20 unfolds during the injection molding of the decorative panel and is in the first state. Therefore, when the size of the panel structure 4 is lengthened, the flange 2 will not collide with the mold during ejection. By hinged to the movable flange 20 and the panel body 1 through the hinge structure 3, as shown... Figure 13As shown, the movable flange 20 after being ejected is folded and fixed with the fixed flange 22 in the second state to form a complete protective plate flange 2. The setting of this structure greatly improves the design freedom of the decorative protective plate and ensures that the decorative protective plate can give full play to its quality or performance advantages.

[0062] The decorative panel injection space 7 also includes a panel structure injection space 71, with a movable flange space 72 located on one side of the panel structure injection space 71. In existing molds, a panel structure injection space 71 is also provided because a panel structure needs to be formed by injection molding. A slanted ejector 11 is provided at the bottom of the panel structure injection space 71, and another slanted ejector 11 is provided away from the panel structure injection space 71. During one ejection, the two slanted ejectors 11 move simultaneously. However, in this application, since the movable flange 20 is in the first state during the injection of the decorative panel and does not need to form an undercut structure, the slanted ejector 11 at the movable flange 20 does not need to be provided in this mold. Consequently, the straight ejector block 9 at the top of the slanted ejector 11 also does not need to be provided, and the panel structure injection space 71 is directly provided on the rear mold 6. In this application, an inclined ejector 11 is provided on one side of the fixed flange space. The inclined ejector 11 is movably connected to the rear mold 6 and is located at the bottom of the guard plate space. The decorative guard plate is ejected by the inclined ejector 11 located on the fixed flange space side, and the ejection process of the decorative guard plate can be completed in one ejection. This not only simplifies the structure of the mold, but also simplifies the process flow of the decorative guard plate forming, saving work efficiency and processing costs.

[0063] Based on the above embodiments, in this embodiment, both the front mold 5 and the rear mold 6 have water channels 8 inside, and the water channels 8 are parallel to the length extension direction of the hinge space 70. In this embodiment, as... Figure 15 and Figure 16 As shown, the water channel 8 is located near the injection molding space 7 of the decorative panel, and the water channel 8 is set to be parallel to the length extension direction of the hinge space 70. The water channels 8 are evenly distributed near the hinge space 70, so that the hinge structure 3 is cooled sufficiently and evenly, so that the hinge structure 3 obtains uniform mechanical properties, and can also avoid overheating that would cause a decrease in the strength performance of the hinge structure 3. Figure 16 In the diagram: I represents inlet water, and O represents outlet water.

[0064] Based on the above embodiments, in this embodiment, the front mold 5 is provided with a first gate 50 and a second gate 51. The first gate 50 and the second gate 51 are located on both sides of the hinge space 70, and the length extension direction of the hinge space 70 is perpendicular to the flow direction of the rubber material. Figure 15 As shown, the first gate 50 is the main gate, and the second gate 51 is the pressure-holding gate; Figure 17 yes Figure 15The top view shows the gate arrangement, with the rubber material flowing from the first gate 50 to the second gate 51, the flow direction of the rubber material perpendicular to the spatial length extension direction. To meet the strength and durability requirements of the hinge structure 3, injection weld lines are not allowed within a 15mm radius of the hinge structure 3, as weld lines can easily cause the hinge to break when bent or folded. It should be noted that during the injection molding of plastic parts, the molten plastic converges at the point of cooling, forming a convergence line on the surface with inconsistent gloss and color, which is called a weld line. Weld lines have an adverse effect on the product's appearance and structural strength; therefore, weld lines are generally not allowed in the load-bearing parts of the product. Therefore, during injection molding, it is necessary to control the smooth flow of molten plastic through the hinge space 70 on the mold to avoid defects such as air entrapment and ensure that the strength of the hinge structure 3 is uniform.

[0065] In summary, this application solves the problem that the four dimensions of the guard plate structure in the secondary ejection mechanism cannot be lengthened, greatly improving the design freedom of the decorative guard plate structure and ensuring that the quality or performance advantages are brought into play.

[0066] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0067] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0068] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A decorative panel, characterized in that, It includes: Protective plate body (1); The guard plate flange (2) includes a movable flange (20) and a fixed flange (22). The fixed flange (22) is fixed on the guard plate body (1), and the movable flange (20) is hinged to the guard plate body (1) through a hinge structure (3). The movable flange (20) has a first state and a second state. When the movable flange (20) is in the first state, the movable flange (20) unfolds and separates from the fixed flange (22). When the movable flange (20) is in the second state, the movable flange (20) folds and connects to the fixed flange (22). The movable flange (20) is provided with a positioning part (21), and the fixed flange (22) is provided with a mating part (23). When the active flange (20) is in the second state, the positioning member (21) is connected to the mating member (23); The positioning component (21) is a first extension plate extending from the movable flange (20) to the fixed flange (22), and the mating component (23) is a second extension plate extending from the fixed flange (22) to the movable flange (20). The first extension plate and the second extension plate are in contact. The first extension plate forms a first stepped structure on the movable flange (20), and the second extension plate forms a second stepped structure on the fixed flange (22) that matches the first stepped structure.

2. The decorative panel as described in claim 1, characterized in that: The first extension plate has a first upper hole (210), and the second extension plate has a second upper hole (230). The first extension plate and the second extension plate are riveted together through the first upper hole (210) and the second upper hole (230).

3. The decorative panel as described in claim 1, characterized in that: The hinge structure (3) has a thickness L1, which is 1 ± 0.2 mm; The hinge structure (3) has a length L2, which is 2.5mm-3.5mm.

4. The decorative panel as described in claim 1, characterized in that: One end of the hinge structure (3) is connected to the guard plate body (1), and the other end of the hinge structure (3) is connected to the movable flange (20). The connection between the hinge structure (3) and the movable flange (20) and the connection between the hinge structure (3) and the guard plate body (1) both form a rounded corner with a radius of 1mm-2mm.

5. A mold for injection molding the decorative panel according to any one of claims 1-4, characterized in that, It includes: Front mold (5); After the rear mold (6), front mold (5) and rear mold (6) are assembled, a decorative guard plate injection space (7) is formed between the rear mold (6) and the front mold (5). The decorative guard plate injection space (7) includes a guard plate space, a hinge space (70) and a flange space. The flange space includes a movable flange space and a fixed flange space. The hinge space (70) is located between the guard plate space and the movable flange space and is connected to the guard plate space and the movable flange space. The fixed flange space is connected to the guard plate space. The movable flange space extends away from the guard plate space, and the fixed flange space extends towards the guard plate space.

6. The mold as described in claim 5, characterized in that: The mold also includes an inclined top (11), which is movably connected to the rear mold (6). The inclined top (11) is located at the bottom of the guard plate space and on one side of the fixed flange space.

7. The mold as described in claim 5, characterized in that: Water channels (8) are provided inside both the front mold (5) and the rear mold (6), and the water channels (8) are parallel to the length extension direction of the hinge space (70); Alternatively, the front mold (5) is provided with a first gate (50) and a second gate (51), the first gate (50) and the second gate (51) are located on both sides of the hinge space (70), and the length extension direction of the hinge space (70) is perpendicular to the flow direction of the rubber material.

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