A molding device for a side portion variable thickness plate of an automobile seat

Abstract

This invention relates to the technical field of forming equipment for variable thickness side panels of automotive seats, and more particularly to a forming device for variable thickness side panels of automotive seats, comprising an upper template, a lower template, an upper forming mold, a lower forming mold, and a positioning assembly. The lower template is disposed below the upper template, and the upper forming mold is fixed to the lower end of the upper template. The upper forming mold has an upper mold cavity, and an upper mold slider is vertically disposed within the upper mold cavity via a sliding mechanism. The lower forming mold is fixed to the upper end of the lower template, and has a lower mold cavity. A lower mold slider is disposed within the lower mold slider, and a heating element capable of controlling temperature is disposed within the lower mold slider. This invention, by providing a heating element within the lower mold slider, enables local preheating of the variable thickness sheet before forming, reducing the forming difficulty, minimizing springback during the forming process, and thus obtaining a more precise forming profile.

Description

Technical Field

[0001] This invention relates to the technical field of molding equipment for variable thickness side panels of automobile seats, and more particularly to a molding apparatus for variable thickness side panels of automobile seats. Background Technology

[0002] The side panels of automotive seats are a crucial component of the seat structure. They not only need to provide sufficient structural strength to meet side-impact safety requirements but also need to be as lightweight as possible to reduce overall fuel consumption and carbon emissions. Traditional automotive seat side panels are typically made by stamping steel sheets of uniform thickness, meaning the thickness is the same throughout the entire sheet. However, the stress distribution varies significantly across different areas of the seat side. The mounting and connection areas experience higher stress and require thicker material to ensure strength, while the edge and non-load-bearing areas experience lower stress and can be accommodated with thinner material. This uniform thickness design results in a significant waste of material in non-critical load-bearing areas, hindering the goal of lightweighting the vehicle.

[0003] To address the aforementioned issues, variable thickness plate technology has emerged. Variable thickness plates refer to monolithic plates where different areas have varying thicknesses on the same sheet material through rolling or other processes, creating a smooth transition between the thick and thin sections. Using variable thickness plates to manufacture the sides of automotive seats can achieve significant weight reduction while maintaining overall structural strength.

[0004] In existing technologies, due to the different thicknesses of the sheet metal, the material flow characteristics of thick and thin areas differ significantly during the stamping process, which can easily lead to defects such as wrinkling, cracking, and uneven springback, placing higher demands on the precision and controllability of the forming device. Summary of the Invention

[0005] In view of this, the purpose of this invention is to provide a forming device for variable thickness plates on the side of automobile seats, so as to solve the problems of wrinkling, cracking and uneven springback that are prone to occur during the stamping process of variable thickness plates on the side of automobile seats.

[0006] To achieve the above objectives, the present invention provides a forming apparatus for a variable thickness plate on the side of an automobile seat, comprising: Upload template; The lower template is set below the upper template; A forming upper mold is fixed to the lower end of the upper template. The upper mold has an upper mold cavity at one end facing the lower template. An upper mold slider is vertically arranged in the upper mold cavity by means of sliding. A forming lower mold is fixed to the upper end of the lower template. The end of the forming lower mold facing the upper template is provided with a lower mold cavity. The lower mold cavity is provided with a lower mold slider that can move vertically. The lower mold slider is provided with a forming groove that matches the lower mold cavity. The lower mold slider is provided with a heating element that can control the temperature. The positioning component has several positioning posts fixed to the upper end of the lower template, and the positioning posts are provided with positioning end faces for limiting the movement of the edge of the variable thickness plate. When the variable thickness plate is placed on the lower mold cavity, the positioning end face positions the edge of the variable thickness plate, the lower mold slider moves upward and abuts against the variable thickness plate, and the heating element preheats the variable thickness plate.

[0007] In an optional example, an upper mold unloading block is vertically arranged in the upper mold cavity by means of sliding. The upper mold unloading block can move toward the direction of the lower mold plate and disengage from the upper mold cavity. The upper mold slider is installed in the upper mold unloading block by means of sliding.

[0008] In an optional example, the upper mold cavity has a vertically extending upper mold groove that penetrates the upper mold. The upper mold unloading block is slidably installed in the upper mold groove. The lower end of the upper mold unloading block has an unloading forming part that matches the shape of the upper mold cavity. The bottom of the upper mold groove has several spring holes. Unloading springs are inserted and fixed in the spring holes. The upper mold unloading block has a forming groove. The upper mold slider is slidably inserted in the forming groove. The end of the unloading spring abuts against the upper end of the upper mold unloading block and can push the upper mold unloading block to move away from the upper mold plate.

[0009] In an optional example, an upper mold telescopic cylinder is fixed on the upper template. The telescopic end of the upper mold telescopic cylinder is fixedly connected to the upper mold slider and is used to drive the movement of the upper mold slider.

[0010] In one optional example, a support block is fixed to the upper end of the lower template, and the forming lower mold is fixed to the upper end of the support block, so that an installation cavity is formed between the forming lower mold and the lower template. A driven component is fixed in the installation cavity, and the driven component is drivenly connected to the lower mold slider. A drive telescopic cylinder is fixedly installed on the lower template, and the telescopic end of the drive telescopic cylinder is drivenly connected to the driven component, so that the driven component drives the lower mold slider to move vertically.

[0011] In an optional example, the driven component includes a driven bracket that is slidably mounted on the upper end of the lower mold plate. A driving wedge block is fixed on the driven bracket, and a driven wedge block is fixed at the lower end of the lower mold slider. The driving wedge block matches the driven wedge block and drives the lower mold slider to move vertically.

[0012] In one optional example, the lower mold has a vertical through-groove along its upper edge, and the lower mold slider is inserted into the through-groove by sliding. The upper end of the lower mold slider has a lower mold forming part that matches the shape of the lower mold cavity.

[0013] In an optional example, the inner wall of the lower mold through groove is provided with a vertically arranged sliding guide groove, and the lower mold slider is provided with a sliding guide part that matches the sliding guide groove.

[0014] In one optional example, the lower mold slider includes a slider base and a slider upper seat that are vertically fixed to each other. The upper end of the slider base has a lower heating cavity, and the bottom of the slider upper seat has an upper heating cavity. The upper heating cavity and the lower heating cavity are combined to form a heating cavity for mounting a heating element.

[0015] In one optional example, a guide post is fixed to the lower end of the upper template, and a guide ring is fixed to the upper end of the lower template. The guide post can be slidably inserted into the guide ring.

[0016] The beneficial effects of this invention are as follows: by providing a heating element inside the lower mold slider, the variable thickness sheet can be locally preheated before molding, reducing molding difficulty and springback during molding, thereby obtaining a more accurate molding profile. At the same time, the temperature of the heating element can be precisely controlled, allowing the selection of the optimal preheating temperature according to different materials and thicknesses of the sheet, ensuring molding quality and avoiding overheating damage to material properties. Furthermore, the positioning, preheating, and molding functions are integrated into one unit, enabling precise positioning, preheating, and pressing of variable thickness sheet in a single station, eliminating the need for additional positioning fixtures and preheating equipment. This reduces process flow and workpiece handling time, improving production efficiency. Compared to the traditional manufacturing process of welding first and then stamping, it reduces the number of parts, molds, and processes, lowering tooling manufacturing costs and production management costs, thus exhibiting good economic benefits. Attached Figure Description

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

[0018] Figure 1 A three-dimensional schematic diagram of the variable thickness plate on the side of a car seat; Figure 2 This is a schematic diagram of the exploded structure of an embodiment of the present invention. Figure 1 ; Figure 3 This is a schematic diagram of the exploded structure of an embodiment of the present invention. Figure 2 ; Figure 4 This is a cross-sectional view of an embodiment of the present invention; Figure 5 This is a schematic diagram of the exploded structure of the upper molding die in an embodiment of the present invention. Figure 1 ; Figure 6 This is a schematic diagram of the exploded structure of the upper molding die in an embodiment of the present invention. Figure 2 ; Figure 7 This is a schematic diagram of the exploded structure of the lower mold in an embodiment of the present invention. Figure 1 ; Figure 8 This is a schematic diagram of the exploded structure of the lower mold in an embodiment of the present invention. Figure 2 .

[0019] The markings in the diagram are as follows: 1. Upper template; 101. Spring hole; 2. Lower template; 3. Upper forming mold; 301. Upper mold cavity; 302. Upper mold slide; 4. Lower forming mold; 401. Lower mold cavity; 402. Lower mold through groove; 403. Sliding guide groove; 5. Upper mold slider; 6. Lower mold slider; 61. Forming groove; 62. Lower mold forming part; 63. Sliding guide part; 64. Slider base; 641. Lower heating cavity; 65. 1. Slider upper seat; 651. Upper heating cavity; 7. Heating element; 8. Positioning post; 81. Positioning end face; 9. Upper mold unloading block; 91. Unloading forming part; 92. Forming groove; 10. Unloading spring; 11. Upper mold telescopic cylinder; 12. Support block; 13. Drive telescopic cylinder; 14. Driven bracket; 15. Driven wedge block; 16. Driven wedge block; 17. Guide rail; 18. Sliding block; 19. Guide post; 20. Guide ring. Detailed Implementation

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

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

[0022] Please see Figure 1 The image shown is a three-dimensional schematic diagram of a variable thickness plate on the side of a car seat.

[0023] In one embodiment, please refer to Figures 2 to 4 As shown, the present invention provides a forming device for a variable thickness plate on the side of an automobile seat, comprising an upper template 1, a lower template 2, an upper forming mold 3, a lower forming mold 4, and a positioning component.

[0024] The upper template 1 and the lower template 2 are set opposite each other, with the upper template 1 fixedly connected to the slider of the external press and the lower template 2 fixedly installed on the worktable of the press.

[0025] The upper forming mold 3 is fixed to the lower end of the upper template 1 by bolt connection. The upper forming mold 3 has an upper mold cavity 301 at the end facing the lower template 2. The upper mold slider 5 is arranged vertically in the upper mold cavity 301 by sliding.

[0026] The lower forming mold 4 is fixed to the upper end of the lower template 2. A lower mold cavity 401 is provided at the end of the lower forming mold 4 facing the upper template 1. A lower mold slider 6, capable of vertical movement, is provided on the lower mold cavity 401. A forming groove 61 matching the lower mold cavity 401 is provided on the lower mold slider 6. A heating element 7, capable of temperature control, is provided inside the lower mold slider 6. The heating element 7 can be an electric heating rod, electric heating tube, or electric heating plate, and is connected to a temperature controller to achieve precise control of the surface temperature of the lower mold slider 6.

[0027] The positioning component has several positioning posts 8 fixed to the upper end of the lower template 2, and the positioning posts 8 are provided with positioning end faces 81 for limiting the movement of the edge of the variable thickness plate.

[0028] When the variable thickness plate is placed on the lower mold cavity 401, the positioning end face 81 positions the edge of the variable thickness plate, the lower mold slider 6 moves upward and abuts against the variable thickness plate, and the heating element 7 preheats the variable thickness plate.

[0029] Working principle: Step 1: Place the variable thickness plate to be formed on the lower mold cavity 401, with the edge of the variable thickness plate abutting against the positioning end face 81 of the positioning post 8, to achieve accurate positioning of the variable thickness plate of the car seat side on the lower mold cavity 401. Step 2: The lower mold slider 6 moves upward by a set distance (e.g., 1cm), and its upper surface abuts against the lower surface of the variable thickness plate. Step 3: The heating element 7 operates to heat the lower mold slider 6, so that the heat on the surface of the lower mold slider 6 is transferred to the variable thickness plate, and the part of the variable thickness plate to be formed is preheated. The preheating temperature can be adjusted according to the material and thickness of the variable thickness plate. Step 4: The external press drives the upper template 1 to move downward, causing the upper forming mold 3 to move toward the lower template 2. The upper mold slider 5 slides downward under the drive of the first drive mechanism, cooperating with the forming groove 61 of the lower mold slider 6 to press the variable thickness plate into the required shape. After forming is completed, the upper template 1 retracts upward, and the lower mold slider 6 moves downward to reset. The formed variable thickness plate can then be removed and proceed to the next process.

[0030] Specifically, this example incorporates a heating element 7 within the lower mold slider 6, enabling localized preheating of the variable thickness sheet before molding. This reduces molding difficulty and springback during the molding process, resulting in a more precise molding profile. Furthermore, the temperature of the heating element 7 can be precisely controlled, allowing for the selection of the optimal preheating temperature based on the material and thickness of the sheet. This ensures molding quality and prevents overheating damage to material properties. The integration of positioning, preheating, and molding functions into a single unit allows for precise positioning, preheating, and pressing of the variable thickness sheet in a single workstation. This eliminates the need for additional positioning fixtures and preheating equipment, reducing process flow and workpiece handling time, and improving production efficiency. Compared to the traditional welding-then-stamping manufacturing process, this reduces the number of parts, molds, and processes, lowering tooling manufacturing and production management costs, thus demonstrating excellent economic efficiency.

[0031] In an optional example, please refer to Figures 2 to 4 As shown, an upper mold unloading block 9 is vertically arranged in the upper mold cavity 301 via a sliding mechanism. The upper mold unloading block 9 can move towards the lower mold plate 2 and disengage from the upper mold cavity 301. The upper mold slider 5 is installed in the upper mold unloading block 9 via a sliding mechanism. The upper mold unloading block 9 moves downward so that its lower end face contacts the upper surface of the variable thickness plate and applies a certain clamping force, thereby achieving the functions of pressing and unloading the material.

[0032] Specifically, in this example, by setting the upper mold unloading block 9, after the variable thickness plate is formed, the upper mold slider 5 retracts first, while the upper mold unloading block 9 remains in a pressed state, and then retracts again. This sequential action can effectively prevent the variable thickness plate from sticking to the upper mold slider 5 or the upper mold cavity 301 due to forming pressure or heating, avoiding plate deformation or tearing during demolding, and improving the yield and mold life.

[0033] In an optional example, please refer to Figures 2 to 6 As shown, an upper mold groove 302 is vertically provided in the upper mold cavity 301, which penetrates the upper mold 3. The upper mold unloading block 9 is installed in the upper mold groove 302 by sliding. The lower end of the upper mold unloading block 9 is provided with an unloading forming part 91 that matches the shape of the upper mold cavity 301. Several spring holes 101 are provided at the bottom of the upper template 1. Unloading springs 10 are inserted and fixed in the spring holes 101. A forming groove 92 is provided in the upper mold unloading block 9. The upper mold slider 5 is inserted into the forming groove 92 by sliding. The end of the unloading spring 10 abuts against the upper end of the upper mold unloading block 9 and can push the upper mold unloading block 9 to move away from the upper template 1.

[0034] Specifically, this example achieves smooth and uniform unloading through the continuous elastic force of the unloading spring 10, further preventing the variable thickness sheet from adhering to the upper mold slider 5 or the upper mold cavity 301 due to molding pressure or heating, avoiding deformation, tearing or surface scratches of the sheet during demolding, and improving the yield of variable thickness sheet and the service life of the mold.

[0035] In an optional example, please refer to Figures 2 to 6 As shown, an upper mold telescopic cylinder 11 is fixed to the upper mold template 1 by bolt connection. The telescopic end of the upper mold telescopic cylinder 11 is fixedly connected to the upper mold slider 5 by bolt connection and is used to drive the movement of the upper mold slider 5.

[0036] Specifically, in this example, the upper mold telescopic cylinder 11 is directly fixed to the upper template 1 by bolts, and its telescopic end is rigidly connected to the upper mold slider 5 by bolts. The structure is compact, occupies little space, reduces transmission links, has a fast response speed, and precise position control, which facilitates rapid positioning of the variable thickness plate on the side of the car seat during the molding process and improves the molding quality of the variable thickness plate on the side of the car seat.

[0037] In an optional example, please refer to Figures 2 to 6As shown, a support block 12 is fixed to the upper end of the lower template 2, and the forming lower mold 4 is fixed to the upper end of the support block 12, so that an installation cavity is formed between the forming lower mold 4 and the lower template 2. A driven component is fixed in the installation cavity, and the driven component is driven to the lower mold slider 6. A drive telescopic cylinder 13 is fixed on the lower template 2, and the telescopic end of the drive telescopic cylinder 13 is driven to the driven component, so that the driven component drives the lower mold slider 6 to move vertically.

[0038] Specifically, this example uses a driven component installed inside the mounting cavity, making the overall structure more compact, saving the required vertical space, reducing the closing height of the molding device, ensuring smooth and reliable transmission, and facilitating disassembly and maintenance.

[0039] In an optional example, please refer to Figures 2 to 8 As shown, the driven assembly includes a driven bracket 14, which is slidably mounted on the upper end of the lower mold plate 2. A driving wedge block 15 is fixed on the driven bracket 14, and a driven wedge block 16 is fixed to the lower end of the lower mold slider 6. The driving wedge block 15 matches the driven wedge block 16 and drives the lower mold slider 6 to move vertically. A guide rail 17, arranged along the length direction, is fixed to the upper end of the lower mold plate 2. A sliding block 18 is slidably inserted into the guide rail 17 and is fixedly connected to the driven wedge block 16 by bolts.

[0040] Specifically, this example achieves a precise transition from horizontal drive to vertical movement by setting up the cooperation of the driven bracket 14, the driving wedge block 15, and the driven wedge block 16, ensuring the straightness and stability of the horizontal movement of the driven bracket 14, and further saving vertical space.

[0041] In an optional example, please refer to Figures 2 to 8 As shown, the lower mold 4 has a vertically extending groove 402 that passes through it. The lower mold slider 6 is inserted into the groove 402 by sliding. The upper end of the lower mold slider 6 has a lower mold forming part 62 that matches the shape of the lower mold cavity 401, which facilitates the installation of the lower mold slider 6.

[0042] In an optional example, please refer to Figures 2 to 8 As shown, the inner wall of the lower mold through groove 402 is provided with a vertically arranged sliding guide groove 403, and the lower mold slider 6 is provided with a sliding guide part 63 that matches the sliding guide groove 403.

[0043] Specifically, in this example, the sliding guide groove 403 cooperates with the sliding guide part 63 on the lower mold slider 6 to effectively limit the rotation and sway of the lower mold slider 6 in the horizontal plane. Even when subjected to asymmetrical forming force, the lower mold slider 6 can still maintain strict vertical linear motion, ensuring the precise alignment of the forming groove 61 and the upper mold slider 5, and improving the forming accuracy and dimensional consistency of the variable thickness plate.

[0044] In an optional example, please refer to Figures 2 to 8 As shown, the lower mold slider 6 includes a slider base 64 and a slider upper seat 65 that are vertically arranged and fixed to each other by bolts. The upper end of the slider base 64 is provided with a lower heating cavity 641, and the bottom of the slider upper seat 65 is provided with an upper heating cavity 651. The upper heating cavity 651 and the lower heating cavity 641 are combined to form a heating cavity for installing the heating element 7.

[0045] Specifically, the slider in this example adopts a split structure in which the slider base 64 and the upper slider seat 65 are fixed to each other. The lower heating cavity 641 and the upper heating cavity 651 are machined on the upper part respectively. After being combined, they form a complete heating cavity. This split structure reduces the machining difficulty of the heating cavity and facilitates the installation, replacement and maintenance of the heating element 7.

[0046] In an optional example, please refer to Figures 2 to 8 As shown, the lower end of the upper template 1 is fixed with a guide post 19 by bolt connection, and the upper end of the lower template 2 is fixed with a guide ring 20 by bolt connection. The guide post 19 can be slidably inserted into the guide ring 20.

[0047] Specifically, this example uses the cooperation of guide post 19 and guide ring 20 to provide precise guidance for the upper mold plate 1 and lower mold plate 2 throughout the process, effectively preventing misalignment caused by press slide sway or uneven mold force, ensuring the alignment accuracy of the upper mold 3 and the lower mold 4, and further improving the forming quality of variable thickness plates.

[0048] In summary, this invention, by incorporating a heating element 7 within the lower mold slider 6, enables localized preheating of the variable thickness sheet material before molding, reducing molding difficulty and springback during the molding process, thereby achieving a more precise molding profile. Simultaneously, the temperature of the heating element 7 can be precisely controlled, allowing selection of the optimal preheating temperature based on the material and thickness of the sheet material, ensuring molding quality and preventing overheating damage to material properties. Furthermore, the installation of the driven component within the mounting cavity makes the overall structure of the molding device more compact, saving vertical space required for the molding device, reducing the closing height of the molding device, ensuring smooth and reliable transmission, and facilitating disassembly and maintenance.

[0049] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in the details for the sake of brevity.

[0050] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A forming apparatus for a variable thickness plate on the side of an automobile seat, characterized in that, include: Template (1) above; The lower template (2) is positioned below the upper template (1); The upper forming mold (3) is fixed to the lower end of the upper template (1). The upper forming mold (3) has an upper mold cavity (301) at one end facing the lower template (2). The upper mold slide block (5) is arranged vertically in the upper mold cavity (301) by sliding. A lower forming mold (4) is fixed to the upper end of the lower template (2). The lower forming mold (4) has a lower mold cavity (401) at one end facing the upper template (1). A lower mold slider (6) that can move vertically is provided on the lower mold cavity (401). A forming groove (61) that matches the lower mold cavity (401) is provided on the lower mold slider (6). A heating element (7) that can control the temperature is provided inside the lower mold slider (6). The positioning component has several positioning posts (8) fixed to the upper end of the lower template (2), and the positioning posts (8) are provided with positioning end faces (81) for limiting the movement of the edge of the variable thickness plate. When the variable thickness plate is placed on the lower mold cavity (401), the positioning end face (81) positions the edge of the variable thickness plate, the lower mold slider (6) moves upward and abuts against the variable thickness plate, and the heating element (7) preheats the variable thickness plate.

2. The forming apparatus for variable thickness plate on the side of an automobile seat according to claim 1, characterized in that, The upper mold cavity (301) is vertically arranged by means of sliding. The upper mold unloading block (9) can move toward the lower mold plate (2) and disengage from the upper mold cavity (301). The upper mold slider (5) is installed in the upper mold unloading block (9) by means of sliding.

3. The forming apparatus for variable thickness plate on the side of an automobile seat according to claim 2, characterized in that, The upper mold cavity (301) has a vertically extending upper mold groove (302) that penetrates the upper mold (3). The upper mold unloading block (9) is installed in the upper mold groove (302) by sliding. The lower end of the upper mold unloading block (9) has an unloading forming part (91) that matches the shape of the upper mold cavity (301). The bottom of the upper mold groove (302) has several spring holes (101). Unloading springs (10) are inserted and fixed in the spring holes (101). The upper mold unloading block (9) has a forming groove (92). The upper mold slider (5) is inserted into the forming groove (92) by sliding. The end of the unloading spring (10) abuts against the upper end of the upper mold unloading block (9) and can push the upper mold unloading block (9) to move away from the upper mold plate (1).

4. The forming apparatus for variable thickness side plate of automobile seat according to claim 3, characterized in that, An upper mold telescopic cylinder (11) is fixed on the upper template (1). The telescopic end of the upper mold telescopic cylinder (11) is fixedly connected to the upper mold slider (5) and is used to drive the movement of the upper mold slider (5).

5. The forming apparatus for variable thickness plate on the side of an automobile seat according to claim 4, characterized in that, A support block (12) is fixed to the upper end of the lower template (2), and the forming lower mold (4) is fixed to the upper end of the support block (12), so that an installation cavity is formed between the forming lower mold (4) and the lower template (2). A driven component is fixed in the installation cavity. The driven component is driven and connected to the lower mold slider (6). A drive telescopic cylinder (13) is fixed and installed on the lower template (2). The telescopic end of the drive telescopic cylinder (13) is driven and connected to the driven component, so that the driven component drives the lower mold slider (6) to move vertically.

6. The forming apparatus for variable thickness plate on the side of an automobile seat according to claim 5, characterized in that, The driven component includes a driven bracket (14), which is slidably mounted on the upper end of the lower template (2). A driving wedge block (15) is fixed on the driven bracket (14), and a driven wedge block (16) is fixed at the lower end of the lower mold slider (6). The driving wedge block (15) matches the driven wedge block (16) and drives the lower mold slider (6) to move vertically.

7. The forming apparatus for variable thickness plate on the side of an automobile seat according to claim 6, characterized in that, The lower mold (4) has a vertically extending groove (402) that passes through it. The lower mold slider (6) is inserted into the groove (402) by sliding. The upper end of the lower mold slider (6) has a lower mold forming part (62) that matches the shape of the lower mold cavity (401).

8. The forming apparatus for variable thickness plate on the side of an automobile seat according to claim 7, characterized in that, The inner wall of the lower mold through groove (402) is provided with a vertically arranged sliding guide groove (403), and the lower mold slider (6) is provided with a sliding guide part (63) that matches the sliding guide groove (403).

9. The forming apparatus for variable thickness plate on the side of an automobile seat according to claim 8, characterized in that, The lower mold slider (6) includes a slider base (64) and a slider upper seat (65) that are fixed to each other in a vertical direction. The upper end of the slider base (64) is provided with a lower heating cavity (641), and the bottom of the slider upper seat (65) is provided with an upper heating cavity (651). The upper heating cavity (651) and the lower heating cavity (641) are combined to form a heating cavity for installing the heating element (7).

10. The forming apparatus for variable thickness side plate of automobile seat according to claim 1, characterized in that, The lower end of the upper template (1) is fixed with a guide post (19), and the upper end of the lower template (2) is fixed with a guide ring (20). The guide post (19) can be inserted into the guide ring (20) by sliding.

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