An inverted-dome molded assembly

Abstract

The application discloses a reverse-docking forming assembly and belongs to the technical field of automobile part processing, which comprises a lower die plate, a mounting seat matched with a product to be processed is arranged on the lower die plate, a forming assembly is arranged at one end of the mounting seat, the forming assembly comprises a base and two symmetrically arranged first inclined joints, the two first inclined joints are respectively arranged on the left side and the right side of the base and are spaced apart from the base, movable inserts are arranged on the left side and the right side of the base, the left side and the right side of the base are inclined surfaces, the inner side of the insert is connected with the base as an inclined surface, and the outer side of the insert is used for forming the inner wall surface of the opening of the control arm, a nitrogen power piece is arranged between the base and the insert, and the nitrogen power piece drives the two inserts to be folded upwards along the inclined surface of the base. The application can form the reverse-docking structure of the control arm and smoothly demould, thereby improving the production efficiency and reducing the processing cost.

Description

Technical Field

[0001] This application relates to the field of automotive parts processing technology, and in particular to a snap-fit ​​assembly. Background Technology

[0002] With the continuous development of the automotive industry, the design of automotive chassis components is becoming increasingly complex to meet higher strength and functional requirements. As one of the key components of the automotive chassis, the control arm's main function is to guide the movement of the wheels and tires, while transmitting the longitudinal, lateral, and vertical forces generated by the tires' contact with the ground to the vehicle body, thereby maintaining the vehicle's stability and handling performance.

[0003] In recent years, in order to further improve the strength and functionality of control arms, their design has gradually developed towards more complex and inverted structures. For example... Figure 1 As shown, an opening is located at one end of the control arm, and the distance between the inner and outer rings of the opening is less than the distance between the outer rings, forming what we commonly call an undercut structure. For forming such complex automotive chassis parts, existing technologies, such as the Chinese patent application "A Cold Stamping Manufacturing Process for an Automotive Chassis Part," publication number CN118543746B, include the following steps: obtaining a flat blank with positioning holes; performing a first stretching to obtain a first forming part and a second forming part, including curved sections connected together; performing a second stretching so that the first forming part forms a third forming part by reducing the radius of its corners, while the curved sections and the second forming part form a fourth forming part by stretching the middle section; performing a third stretching, where the third and fourth forming parts form a fifth and a sixth forming part respectively by increasing their height; and performing punching and folding to obtain the desired control arm product.

[0004] The aforementioned patent application employs a multi-step cold stamping manufacturing method, involving multiple stretching processes, resulting in low product processing efficiency. While existing mold designs typically utilize common forming components, their structure and processes, though sufficient for general product forming needs, present significant limitations when dealing with complex products featuring undercut designs. Specifically, the lack of dedicated mold components for undercut designs in existing technologies significantly increases the design and manufacturing difficulty of the control arm, further restricting the application of complex structural products. Utility Model Content

[0005] The technical problem to be solved by this application is to provide an undercut molding component that can form the undercut structure of the control arm and demold smoothly, thereby improving production efficiency and reducing processing costs.

[0006] The technical solution adopted in this application is as follows: an undercut molding component, including a lower template, on which a mounting base matching the product to be processed is provided, and a molding component is provided at one end of the mounting base. The molding component includes a base and two symmetrically arranged first wedges, which are located on the left and right sides of the base and are spaced apart from the base. The left and right sides of the base are movably connected with inserts, which are inclined surfaces. The inner side of the insert is connected to the base as an inclined surface, and the outer side of the insert is used to form the inner wall surface of the opening of the molding control arm. A nitrogen-powered component is provided between the base and the inserts, and the nitrogen-powered component pushes the two inserts to retract upward along the inclined surface of the base.

[0007] Compared with existing technologies, the advantages of this application are as follows: First, by setting inclined surfaces on the left and right sides of the base and movably connecting inserts on these inclined surfaces, the outer side of the inserts can be used to form the inner wall surface of the control arm opening. This design effectively meets the forming requirements of the undercut structure, ensuring forming accuracy and quality. A nitrogen-powered component is installed between the base and the inserts. This component pushes the inserts upwards along the inclined surface of the base, thus achieving smooth demolding of the product. This demolding method avoids the problem of difficult demolding in traditional molds and improves production efficiency.

[0008] Secondly, the two symmetrically arranged first wedges are located on the left and right sides of the base, with a gap between them. This layout provides stable support and guidance, ensuring the stability and reliability of the molding process. The use of nitrogen-powered components makes the demolding process smoother, reducing mold wear and maintenance costs. At the same time, the movable connection design of the inserts facilitates disassembly and replacement, improving the mold's service life and maintenance efficiency.

[0009] Furthermore, by replacing the inserts and wedges, this application enables the undercut molding assembly to adapt to undercut structures of different sizes and shapes, thus having wide applicability and being used for molding various automotive chassis parts with similar undercut designs.

[0010] In summary, this application, through its structural design, effectively solves the problems of inverted structure forming and demolding in the prior art, improves production efficiency and product quality, and has high practicality and promotion value.

[0011] In this application, for ease of description, the direction of movement of the two first wedges is taken as the left-right direction, and the length direction of the control arm after it is placed on the mounting base is taken as the front-back direction.

[0012] In some embodiments of this application, the base has an inverted T-shaped structure. The base includes a base and a stand, with the stand directly above the base. The open end of the control arm is mounted on the base and located on both sides of the stand. The inverted T-shaped structure design allows the base to provide stable support, and the cooperation between the base and the stand ensures the precise mounting of the open end of the control arm, improving the stability and accuracy of the molding process.

[0013] In some embodiments of this application, the support base is a trapezoidal structure with a top width smaller than its bottom width. Guide grooves are provided on both the left and right sides of the support base, and a protruding ridge is provided on the inner side of the insert, which is embedded in the guide groove. The guide groove and the protruding ridge restrict the movement of the insert along the inclined surface of the base. The trapezoidal structure of the support base provides good mechanical properties, and the cooperation of the guide groove and the protruding ridge restricts the movement path of the insert, ensuring that the insert moves along a predetermined trajectory during the molding process, thus improving the accuracy and consistency of the molding process.

[0014] In some embodiments of this application, a nitrogen-powered component is installed at the base, and the nitrogen-powered component is connected to two inserts respectively, providing an upward thrust to the inserts. The use of the nitrogen-powered component provides a stable thrust to the inserts, ensuring that the inserts can move smoothly upward along the inclined surface, achieving smooth demolding of the product, and reducing mold wear and maintenance costs.

[0015] In some embodiments of this application, the lower template is provided with two sets of first slide blocks, and a first slider is installed on the first slide block. The first wedge is installed on the first slider. When the first slider moves along the first slide block, it drives the first wedge to move closer to or away from the insert. The side of the first wedge close to the insert is used to form the outer wall surface of the control arm opening. When the first wedge moves to the limit position, there is a gap between it and the adjacent insert.

[0016] The design of the first slider and the first wedge allows the first wedge to move along a predetermined trajectory. This ensures the precision of the outer wall surface at the opening of the control arm and, together with the insert, forms the opening end structure of the control arm.

[0017] In some embodiments of this application, the lower template is provided with two sets of second slide blocks, each with a second slider mounted on it. Each second slider has a second wedge mounted on it. As the second slider moves along the first slide block, the two second wedges move closer together or further apart. The second slide blocks are located near the other end of the mounting base. The design of the second sliders and second wedges allows for precise shaping of the outer surface of the other end of the control arm. By replacing the second wedges, control arms of different sizes can be accommodated, improving the versatility of the component.

[0018] In some embodiments of this application, the second wedge end face is used to form the outer surface of the other end of the control arm, the included angle between the two second slides is an obtuse angle, and there is a gap between the second wedge and the mounting base when it moves to the limit position. In this application, the position setting of the second slides determines the movement trajectory of the second wedge, and designing the included angle between the two second slides to be an obtuse angle can better limit the movement direction of the second wedge, resulting in higher precision in forming the outer surface of the other end of the control arm.

[0019] In some embodiments of this application, the mounting base is provided with a simulation block adapted to the center of the product to be processed. The simulation block is provided with a positioning protrusion. The simulation block is embedded in the control arm to be processed, and the positioning protrusion protrudes through the positioning hole of the control arm to be processed. The design of the simulation block and the positioning protrusion provides stable support and positioning, ensuring the precise position of the product to be processed during the molding process, thereby improving the molding accuracy and quality.

[0020] In some embodiments of this application, the application further includes an upper template, the rear side of the first slider is set as an inclined surface, and a first pressing block is provided on the upper template corresponding to the first slider. The first pressing block acts on the rear side of the first slider, and the upper template pressing down drives the first slider to move towards the base.

[0021] In some embodiments of this application, the application further includes an upper template, the rear side of the second slider is set as an inclined surface, and a second pressing block is provided on the upper template corresponding to the second slider. The second pressing block acts on the rear side of the second slider, and the upper template pressing down drives the second slider to move towards the mounting base.

[0022] This is the preferred solution in this application. The power comes from the upper template. The upper template presses down, causing the first and second sliders to move synchronously and act on the control arm to be processed. This design simplifies the operation process, reduces the need for additional power sources, and ensures precise docking between the plug-in and the simulation block, thereby improving processing efficiency and quality.

[0023] Based on common knowledge in the field, the above-described embodiments can be combined arbitrarily. Attached Figure Description

[0024] The present application will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present application. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0025] Figure 1 This is a schematic diagram of the control arm structure formed in this application;

[0026] Figure 2 This is a schematic diagram of the structure of this application;

[0027] Figure 3 This is a top view of this application;

[0028] Figure 4 for Figure 3 Sectional view of section AA;

[0029] Figure 5 This is a schematic diagram of the internal structure of this application.

[0030] The specific annotations in the attached drawings are as follows: 1. Lower template; 2. Mounting base; 4. Base; 5. First wedge; 6. Insert; 7. Nitrogen-powered component; 8. Base; 9. Stand; 12. First slide block; 13. First slider; 14. Second slide block; 15. Second slider; 16. Second wedge; 17. Simulation block; 18. Positioning protrusion. Detailed Implementation

[0031] The present application will now be described in detail with reference to the accompanying drawings.

[0032] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0033] An undercut molding component, as described in Embodiment 1 Figures 1 to 3As shown: The system includes a lower template 1, on which a mounting base 2 matching the product to be processed is provided. A forming component is provided at one end of the mounting base 2. The forming component includes a base 4 and two symmetrically arranged first inclined wedges 5, located on the left and right sides of the base 4 respectively, with a gap between them. Inserts 6 are movably connected to both sides of the base 4. This arrangement provides stable support and guidance, ensuring the stability and reliability of the forming process. The use of nitrogen-powered components 7 makes the demolding process smoother, reducing mold wear and maintenance costs. Simultaneously, the movable connection design of the inserts 6 facilitates disassembly and replacement, improving the mold's service life and maintenance efficiency. The left and right sides of the base 4 are inclined surfaces, and the inner side of the insert 6 is connected to the base 4 as an inclined surface. The outer side of the insert 6 is used to form the inner wall surface of the control arm opening. A nitrogen-powered component 7 is provided between the base 4 and the insert 6. The nitrogen-powered component 7 pushes the two inserts 6 upward along the inclined surface of the base 4. By setting inclined surfaces on the left and right sides of the base 4 and movably connecting the inserts 6 on the inclined surfaces, the outer side of the insert 6 can be used to form the inner wall surface of the control arm opening. This design can effectively meet the forming requirements of the undercut structure and ensure the forming accuracy and quality. The nitrogen-powered component 7 is provided between the base 4 and the insert 6. The nitrogen-powered component 7 pushes the insert 6 upward along the inclined surface of the base 4, thereby achieving smooth demolding of the product. This demolding method avoids the problem of difficult demolding of traditional molds and improves production efficiency.

[0034] This application allows the undercut molding assembly to adapt to undercut structures of different sizes and shapes by replacing the insert 6 and the wedge, thus possessing wide applicability and being used for molding various automotive chassis parts with similar undercut designs. In summary, this application, through its structural design, effectively solves the problems of undercut structure molding and demolding in the prior art, improving production efficiency and product quality, and possesses high practicality and promotional value.

[0035] In this application, for ease of description, the direction of movement of the two first inclined wedges 5 is taken as the left-right direction, and the length direction of the control arm after it is placed on the mounting base 2 is taken as the front-back direction.

[0036] Example 2, as Figures 1 to 4 As shown, the base 4 has an inverted T-shaped structure. The base 4 includes a base 8 and a stand 9. The stand 9 is located directly above the base 8, and the open end of the control arm is mounted on the base 8 and located on both sides of the stand 9. The inverted T-shaped structure design allows the base 4 to provide stable support, and the cooperation between the base 8 and the stand 9 ensures the precise mounting of the open end of the control arm, improving the stability and accuracy of the molding process.

[0037] The support 9 has a trapezoidal structure with a top width smaller than its bottom width. Guide grooves are provided on both the left and right sides of the support 9. A protruding ridge is provided on the inner side of the insert 6 and embeds into the guide groove. The guide groove and the protruding ridge restrict the movement of the insert 6 along the inclined surface of the base 4. The trapezoidal structure of the support 9 provides good mechanical properties, and the cooperation of the guide groove and the protruding ridge restricts the movement path of the insert 6, ensuring that the insert 6 moves along a predetermined trajectory during the molding process, thus improving the accuracy and consistency of the molding process.

[0038] A nitrogen-powered component 7 is installed at the base 8, and the nitrogen-powered component 7 is connected to two inserts 6 respectively. The nitrogen-powered component 7 provides an upward thrust to the inserts 6. The use of the nitrogen-powered component 7 provides a stable thrust to the inserts 6, ensuring that the inserts 6 can move smoothly upward along the inclined surface, realizing the smooth demolding of the product, and reducing mold wear and maintenance costs.

[0039] The lower template is provided with two sets of first slide blocks 12, and a first slider 13 is mounted on the first slide block 12. The first wedge 5 is mounted on the first slider 13. When the first slider 13 moves along the first slide block 12, it causes the first wedge 5 to move closer to or away from the insert 6. The side of the first wedge 5 that is close to the insert 6 is used to form the outer wall surface of the control arm opening. When the first wedge 5 moves to the limit position, there is a gap between it and the adjacent insert 6. The cooperative design of the first slider 13 and the first wedge 5 allows the first wedge 5 to move according to a predetermined motion trajectory. This ensures the accuracy of forming the outer wall surface of the control arm opening, and together with the insert 6, forms the opening end structure of the control arm.

[0040] The lower template is provided with two sets of second slide blocks 14, on which second sliders 15 are mounted. Second wedges 16 are mounted on the second sliders 15. When the second sliders 15 move along the first slide block 12, the two second wedges 16 move closer or further apart. The second slide blocks 14 are located near the other end of the mounting base 2. The design of the second sliders 15 and second wedges 16 allows for precise shaping of the outer surface of the other end of the control arm. By replacing the second wedges 16, control arms of different sizes can be accommodated, improving the versatility of the component.

[0041] The end face of the second wedge 16 is used to form the outer surface of the other end of the control arm. The included angle between the two second slides 14 is an obtuse angle, and there is a gap between the second wedge 16 and the mounting base 2 when it moves to the limit position. In this application, the position setting of the second slides 14 determines the movement trajectory of the second wedge 16. Designing the included angle between the two second slides 14 to be an obtuse angle can better limit the movement direction of the second wedge 16, and the accuracy of the formed outer surface of the other end of the control arm is higher.

[0042] The mounting base 2 is provided with a simulation block 17 adapted to the center of the product to be processed. The simulation block 17 is provided with a positioning protrusion 18. The simulation block 17 is embedded in the control arm to be processed, and the positioning protrusion 18 protrudes from the positioning hole of the control arm to be processed. The design of the simulation block 17 and the positioning protrusion 18 provides stable support and positioning, ensuring the precise position of the product to be processed during the molding process, thereby improving the molding accuracy and quality.

[0043] This application also includes an upper template, which is not shown in the accompanying drawings. The upper template and lower template 1 are conventional structural designs of the mold structure, and those skilled in the art can obtain the specific technical solution from the text. The rear side of the first slider 13 is set as an inclined surface. A first pressure block is provided on the upper template corresponding to the first slider 13. The first pressure block acts on the rear side of the first slider 13. When the upper template presses down, it drives the first slider 13 to move towards the base 4.

[0044] The rear side of the second slider 15 is set as an inclined surface. A second pressure block is provided on the upper template corresponding to the second slider 15. The second pressure block acts on the rear side of the second slider 15. When the upper template is pressed down, it drives the second slider 15 to move towards the mounting base 2.

[0045] This is the preferred solution in this application. The power comes from the upper template. The upper template presses down, causing the first slider 13 and the second slider 15 to move synchronously to act on the control arm to be processed. This design simplifies the operation process, reduces the need for additional power sources, and ensures precise docking between the plug-in and the simulation block 17, thereby improving processing efficiency and quality.

[0046] The rest of the contents of Example 2 are the same as those of Example 1.

[0047] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The descriptions of the embodiments above are only for the purpose of helping to understand the present application and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A snap-fit ​​component, characterized in that, The system includes a lower template (1), on which a mounting base (2) matching the product to be processed is provided. One end of the mounting base (2) is provided with a forming component. The forming component includes a base (4) and two symmetrically arranged first wedges (5). The two first wedges (5) are located on the left and right sides of the base (4) and are spaced apart from the base (4). The left and right sides of the base (4) are movably connected with inserts (6). The left and right sides of the base (4) are inclined surfaces. The inner side of the insert (6) is connected to the base (4) as an inclined surface. The outer side of the insert (6) is used to form the inner wall surface of the opening of the forming control arm. A nitrogen power component (7) is provided between the base (4) and the insert (6). The nitrogen power component (7) pushes the two inserts (6) to retract upward along the inclined surface of the base (4).

2. The undercut molding component according to claim 1, characterized in that, The base (4) has an inverted T-shaped structure. The base (4) includes a base (8) and a stand (9). The stand (9) is located directly above the base (8). The open end of the control arm is mounted on the base (8) and located on both sides of the stand (9).

3. The undercut molding component according to claim 2, characterized in that, The stand (9) has a trapezoidal structure with a top width smaller than the bottom width. Guide grooves are provided on both the left and right sides of the stand (9). The inner side of the insert (6) is provided with a protruding ridge that is embedded in the guide groove. The guide groove and the protruding ridge restrict the movement of the insert (6) along the inclined surface of the base (4).

4. The undercut molding component according to claim 2, characterized in that, A nitrogen-powered component (7) is installed at the base (8). The nitrogen-powered component (7) is connected to two inserts (6) respectively. The nitrogen-powered component (7) provides an upward thrust to the inserts (6).

5. The undercut molding component according to claim 1, characterized in that, The lower template (1) is provided with two sets of first slide blocks (12), and a first slider (13) is installed on the first slide block (12). The first wedge (5) is installed on the first slider (13). When the first slider (13) moves along the first slide block (12), it drives the first wedge (5) to move closer to or away from the insert (6). The side of the first wedge (5) close to the insert (6) is used to form the outer wall surface of the opening of the control arm. When the first wedge (5) moves to the limit position, there is a gap between it and the adjacent insert (6).

6. The undercut molding component according to claim 1, characterized in that, The lower template (1) is provided with two sets of second slide blocks (14), and a second slider (15) is installed on the second slide block (14). A second wedge (16) is installed on the second slider (15). When the second slider (15) moves along the first slide block (12), it causes the two second wedges (16) to move closer or further away from each other. The second slide block (14) is located at the other end of the mounting base (2).

7. The undercut molding component according to claim 6, characterized in that, The end face of the second wedge (16) is used to form the outer surface of the other end of the control arm. The included angle between the two second slides (14) is an obtuse angle. There is a gap between the second wedge (16) and the mounting base (2) when it is moved to the limit position.

8. The undercut molding component according to claim 1, characterized in that, The mounting base (2) is provided with a simulation block (17) adapted to the middle of the product to be processed. The simulation block (17) is provided with a positioning protrusion (18). The simulation block (17) is embedded in the control arm to be processed. The positioning protrusion (18) is protruding through the positioning hole of the control arm to be processed.

9. A snap-fit ​​component according to claim 5, characterized in that, It also includes an upper template. The rear side of the first slider (13) is set as an inclined surface. A first pressing block is provided on the upper template corresponding to the first slider (13). The first pressing block acts on the rear side of the first slider (13). When the upper template is pressed down, it drives the first slider (13) to move towards the base (4).

10. A snap-fit ​​molding assembly according to claim 6, characterized in that, It also includes an upper template. The rear side of the second slider (15) is set as an inclined surface. A second pressure block is set on the upper template corresponding to the second slider (15). The second pressure block acts on the rear side of the second slider (15). When the upper template is pressed down, it drives the second slider (15) to move towards the mounting base (2).

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