Cold stamping compound die

Abstract

The utility model provides a cold stamping compound die, and the upper die includes upper support plate, opposite top plate, stripper plate base body and stripper plate subassembly, is equipped with first pressure component between stripper plate base body and upper support plate, is equipped with second pressure component between opposite top plate and upper support plate, stripper plate subassembly includes stripper plate and stripper slide, the lower end outside surface of stripper slide forms and forms the upper flanging forming plane and side flanging concave die groove, and the lower die includes lower die seat, pressure plate, upper flanging cutter, side flanging slider, pressure plate and stripper plate subassembly are in alignment, and pressure plate below is equipped with third pressure component, when the upper flanging cutter and the upper flanging forming plane cooperate and form circumferential upper flanging when the mold is closed, and the side flanging slider position and the side flanging concave die groove cooperate and form circumferential side flanging after circumferential upper flanging forming. The utility model discloses cold stamping compound die realizes the compound forming of product circumferential upper flanging and circumferential side flanging, reduces the die manufacturing cost, shortens the manufacturing period, reduces the production artificial cost, and improves production efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of stamping die technology, and specifically relates to a cold stamping composite die. Background Technology

[0002] For example Figure 1 and Figure 2 The sheet metal shell product 1 shown has a circumferential upward flange 1.1 and a circumferential side flange 1.2. In related technologies, the forming process used is: blanking → circumferential upward flange → circumferential side flange, that is, two flanges are performed after blanking.

[0003] Specifically, the structure of sheet metal part 2 after blanking is as follows: Figure 3 As shown, follow along first Figure 3 As shown, fold line a is folded upwards by 90° to achieve a circumferential flange, and then folded inwards by 90° along fold line b to achieve a circumferential side flange, thus completing the final shape. Figure 1 and Figure 2 The shell-type product 1 shown requires three sets of molds—a blanking mold, a circumferential flipping mold, and a circumferential side-flipping mold—to achieve final molding. This results in high mold manufacturing costs, long production cycles, high labor costs, and low production efficiency.

[0004] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Summary of the Invention

[0005] In response to the problems pointed out in the background art, this utility model provides a cold stamping composite mold, in which a set of molds can perform composite forming of circumferential flanging and circumferential side flanging, effectively reducing mold manufacturing costs, manufacturing cycle and production labor costs, and improving stamping production efficiency.

[0006] To achieve the above technical objectives, In some embodiments of this application, a cold stamping composite die is provided, comprising: The upper mold includes an upper support plate, a stripper plate assembly, a vertically floating stripper plate base, and a top plate. A first pressure component that can extend and retract vertically is provided between the stripper plate base and the upper support plate, and a second pressure component that can extend and retract vertically is provided between the top plate and the upper support plate. The top plate abuts against the upper end of the stripper slider. The stripper plate assembly includes a stripper plate and a stripper slider. The stripper plate is fixedly connected to the lower part of the stripper plate base. Multiple stripper sliders are arranged along the circumference of the stripper plate and are slidably connected to the stripper plate through a sloping groove sliding structure. The lower outer side of the stripper slider forms an upper flange forming plane and a side flange die groove located above the upper flange forming plane. In the mold-open state, the bottom surface of the stripper slider is located below the bottom surface of the stripper plate. The lower mold includes a lower mold base, a vertically floating pressure plate, an upper flanging cutter, and a side flanging slider; the pressure plate and the stripper plate assembly are aligned vertically, and a third pressure component that can extend and retract vertically is provided below the pressure plate; the upper flanging cutter is fixed on the periphery of the pressure plate and is used to cooperate with the upper flanging forming plane to form the circumferential flanging when the mold is closed; the side flanging slider is located above the periphery of the upper flanging cutter and is used to slide horizontally to cooperate with the side flanging die groove to form the circumferential side flanging after the circumferential flanging is formed; The side-flipping drive component is used to drive the side-flipping slider to slide horizontally.

[0007] In some embodiments of this application, the plurality of stripper slides include a plurality of corner stripper slides and a plurality of side stripper slides. The plurality of corner stripper slides and the plurality of side stripper slides are respectively disposed at each corner and each side of the stripper plate, and the corner stripper slides and the side stripper slides are staggered. In the mold closing state, among two adjacent corner stripper slides and side stripper slides, the upper flange forming plane of the corner stripper slide is connected to the upper flange forming plane of the side stripper slide and is located in the same plane, and the bottom surface of the side flange die groove of the corner stripper slide is connected to the bottom surface of the side flange die groove of the side stripper slide and is located in the same plane.

[0008] In some embodiments of this application, when the mold is closed, the lower outer surfaces of the corner stripper slider and the side stripper slider of two adjacent sides overlap.

[0009] In some embodiments of this application, the upper flanging forming plane is a vertical plane, the bottom surface of the side flanging die groove is a horizontal plane, and the upper flanging forming plane is perpendicularly connected to the bottom surface of the side flanging die groove.

[0010] In some embodiments of this application, a limiting connecting block is provided between the top plate and the stripping slider. A through portion is formed on the stripping plate substrate for the limiting connecting block to pass through. The upper end of the limiting connecting block abuts against the top plate, and the lower end of the limiting connecting block is fixedly connected to the stripping slider.

[0011] In some embodiments of this application, the upper end of the limiting connecting block forms a limiting structure, which is used to abut against the stripper plate base in the fully open mold state to limit the stripper slider from continuing to slide obliquely downward relative to the stripper plate.

[0012] In some embodiments of this application, a guide slope is formed on the side flange slider; The side-flipping drive component is a shovel, which is vertically mounted on the upper mold. The upper end of the shovel is fixedly connected to the upper support plate, and the lower end forms a side-pushing inclined surface. During mold closing, the side push slope and the guide slope cooperate to drive the side flange slider to slide inward until it cooperates with the side flange cavity to achieve side flange.

[0013] In some embodiments of this application, a limiting seat is fixed on the lower mold base, and the limiting seat is located outside the side flange slider; An elastic component is provided between the limiting seat and the side-flipping slider, which is used to drive the side-flipping slider to slide outward and reset when the mold is opened.

[0014] In some embodiments of this application, a side stop block is fixed on the lower mold base, and the side stop block is located outside the side flange slider; When the mold is closed, the side of the lower end of the shovel that is opposite to the side push slope abuts against the side stop block.

[0015] In some embodiments of this application, a sliding base is fixed on the lower mold base, the sliding base is located below the side flange slider, and a horizontal sliding guide structure is provided between the sliding base and the side flange slider.

[0016] Compared with the prior art, the advantages and positive effects of this application are: This application discloses a cold stamping composite mold. The upper mold includes an upper support plate, a stripper plate assembly, a vertically floating stripper plate base, and a counter-top plate. A first pressure component capable of vertical extension and retraction is provided between the stripper plate base and the upper support plate, and a second pressure component capable of vertical extension and retraction is provided between the counter-top plate and the upper support plate. The counter-top plate abuts against the upper end of the stripper slide block so that the stripper slide block can float up and down with the counter-top plate. The stripper plate assembly includes a stripper plate and a stripper slide block. The stripper plate is fixedly connected to the lower part of the stripper plate base to float up and down with the stripper plate base. The stripper slide block and the stripper plate are slidably connected through a slanted groove sliding structure. The lower outer side of the stripper slide block forms an upward flange forming plane and a side flange die groove located above the upward flange forming plane. In the mold-open state, the bottom surface of the stripper slide block is located below the bottom surface of the stripper plate. The lower mold includes a lower mold base, upper and lower... The system comprises a floating pressure plate, an upper flanging cutter, and a side flanging slider. The pressure plate and stripper plate assemblies are aligned vertically, and a third pressure component that can extend vertically is provided below the pressure plate. The upper flanging cutter is fixed to the periphery of the pressure plate and is used to cooperate with the upper flanging forming plane to form a circumferential flanging during mold closing. The side flanging slider is located above the periphery of the upper flanging cutter and is used to slide horizontally to cooperate with the side flanging die groove to form a circumferential side flanging after circumferential flanging. This cold stamping composite mold of the present application can realize the composite forming of circumferential flanging and circumferential side flanging of the product, that is, the circumferential flanging forming and the circumferential side flanging forming are integrated into one mold, thereby reducing the forming process and the corresponding number of molds, reducing mold manufacturing costs, shortening the mold manufacturing cycle, reducing production labor costs, and improving stamping production efficiency.

[0017] Other features and advantages of this utility model will become clearer after reading the detailed embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a structural schematic diagram of a shell-type product according to an embodiment; Figure 2 This is a schematic diagram of a half-section structure of a shell-type product according to an embodiment; Figure 3 This is a schematic diagram of the sheet metal part structure after blanking according to an embodiment; Figure 4 This is a schematic diagram of the cold stamping composite mold in the mold opening state according to an embodiment; Figure 5 for Figure 4 Top view; Figure 6 for Figure 5 AA section view; Figure 7 for Figure 6 Enlarged view of part B; Figure 8 This is a cross-sectional view of the cold stamping composite mold in the mold closing state according to an embodiment; Figure 9 for Figure 8 Enlarged view of part C; Figure 10 This is a schematic diagram of the upper die structure of the cold stamping composite mold according to an embodiment, viewed from above. Figure 11 This is a schematic diagram of the upper die structure of the cold stamping composite mold according to an embodiment, viewed from below. Figure 12 This is a schematic cross-sectional view of the upper die of a cold stamping composite die according to an embodiment; Figure 13 This is a top view structural diagram showing the relative positions of the stripper plate and stripper slider in the mold opening state according to an embodiment; Figure 14 This is a schematic diagram of the relative positions of the stripper plate and stripper slider in the mold opening state according to an embodiment, viewed from below. Figure 15 This is a top view structural diagram showing the relative positions of the stripper plate and stripper slider in the mold closing state according to an embodiment; Figure 16 This is a schematic diagram of the relative positions of the stripper plate and stripper slider in the mold closing state according to an embodiment, viewed from below. Figure 17 This is a schematic diagram of the structure of the blanked product on the lower die of the cold stamping composite mold according to an embodiment; Figure 18 This is a schematic diagram of the lower die structure of a cold stamping composite die according to an embodiment; Figure 19 This is a schematic cross-sectional view of the lower die of a cold stamping composite die according to an embodiment; Figure 20 This is a schematic diagram of the lower die of a cold stamping composite die according to an embodiment, omitting the pressure plate; Figure 21 This is a schematic diagram of the sliding base, limiting seat, and side stop block in the lower mold according to an embodiment.

[0020] Figure label: 1. Shell-type products; 1.1. Circumferential upward flange; 1.2. Circumferential side flange; 2. Sheet metal parts after blanking; 100. Upper mold; 110. Upper support plate; 120. Top plate; 130. Pressure block; 140. Stripper plate base; 141. Through section; 150. Stripper plate; 151. Dovetail slide rail; 160. Stripper slider; 161. Dovetail groove; 162. Upper flange forming plane; 163. Side flange die groove; 164. Corner stripper slider; 165. Side stripper slider; 170. First pressure component; 180. Second pressure component; 190. Limiting connecting block; 191. Limiting protrusion; 1100. Shovel; 1110. Side push slope; 200. Lower mold; 210. Lower mold base; 220. Pressure plate; 230. Upper flanging cutter; 240. Side flanging slider; 241. Guide slope; 250. Third pressure component; 260. Limiting seat; 270. Elastic component; 280. Side stop block; 281. Copper alloy plate; 290. Sliding base; 291. Dovetail slider female insert; 292. Dovetail slider male insert; 293. Copper alloy standard sliding plate; 2100. Lower support plate; 2200. Guide post and guide sleeve structure; 2300. Support block; 2400. Limiting screw. Detailed Implementation

[0021] 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, and 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.

[0022] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this application.

[0023] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0027] In some embodiments of this application, a cold stamping composite die is proposed for achieving... Figure 1 and Figure 2 The composite molding of the circumferential flange 1.1 and the circumferential side flange 1.2 of the shell-type product 1 shown is as follows: Figure 1 and Figure 2 The circumferential flange 1.1 and the circumferential side flange 1.2 of the shell product 1 shown can be formed sequentially in this set of molds.

[0028] Reference Figures 4 to 16 In some embodiments of this application, the cold stamping composite mold includes an upper mold 100, which includes an upper support plate 110, a top plate 120, a stripper plate base 140, and a stripper plate assembly arranged sequentially from top to bottom.

[0029] The stripper plate base 140 can float up and down, that is, it can float and rise relative to the upper support plate 110. A vertically extendable first pressure member 170 is provided between the stripper plate base 140 and the upper support plate 110. The first pressure member 170 is used to drive the stripper plate base 140 to float and rise relative to the upper support plate 110, and to apply downward pressure to the stripper plate base 140 during molding.

[0030] In some embodiments of this application, a limiting sleeve is connected between the stripper plate base 140 and the upper support plate 110 to limit the downward movement of the stripper plate base 140 relative to the upper support plate 110, thereby ensuring the safe and reliable operation of the stripper plate base 140.

[0031] The stripping plate assembly includes a stripping plate 150 and stripping sliders 160. The stripping plate 150 is located below the stripping plate base 140 and is fixedly connected to the stripping plate base 140. The stripping plate 150 floats up and down together with the stripping plate base 140. Multiple stripping sliders 160 are arranged along the circumference of the stripping plate 150 and are slidably connected to the stripping plate 150 through a sloping groove sliding structure.

[0032] like Figures 6 to 16As shown, the stripping plate 150 is a cone shape that is wider at the top and narrower at the bottom. A straight and inclined dovetail slide rail 151 is formed on its circumferential side at the corresponding position of each stripping slider 160. The top and bottom of the dovetail slide rail 151 are aligned vertically in the projection of their respective top and bottom ends in the vertical plane. A straight and inclined dovetail groove 161 is formed on the stripping slider 160. The dovetail groove 161 and the dovetail slide rail 151 cooperate to form the inclined groove sliding structure, so that the stripping slider 160 and the stripping plate 150 can produce a relative motion of inclined sliding and lifting.

[0033] A second pressure component 180 that can be vertically extended and retracted is sandwiched between the top plate 120 and the upper support plate 110. The second pressure component 180 is used to drive the top plate 120 to float up and down relative to the upper support plate 110 and apply downward pressure to the top plate 120 so that the top plate 120 abuts against the upper end of the unloading slider 160.

[0034] The lower outer side of the stripper slider 160 has an upper flange forming plane 162 and a side flange die groove 163 located above the upper flange forming plane. In the mold open state, the bottom surface of the stripper slider 160 is located below the bottom surface of the stripper plate 150.

[0035] In the mold-open state, the first pressure component 170 drives the stripper plate base 140 to move downward relative to the upper support plate 110, thereby causing the stripper plate 150 to move downward relative to the upper support plate 110 until the bottom surface of the stripper plate 150 is at height position H1; and the top plate 120, driven by the second pressure component 180, moves downward relative to the upper support plate 110, thereby causing the stripper slider 160 to slide down relative to the stripper plate 150 until its bottom surface is at height position H2. Height position H2 is lower than height position H1, that is, the bottom surface of the stripper slider 160 is below the bottom surface of the stripper plate 150. Figure 6 , Figure 7 , Figures 11 to 14 As shown.

[0036] Reference Figures 4 to 9 , Figures 17 to 21 In some embodiments of this application, the cold stamping composite mold includes a lower mold 200, which includes a lower mold base 210, a pressure plate 220, an upper flanging cutter 230, and a side flanging slider 240.

[0037] The pressure plate 220 can float up and down, meaning it can rise and fall relative to the lower mold base 210. The pressure plate 220 is located above the lower mold base 210 and aligned vertically with the stripper plate assembly. A third pressure component 250 is installed on the lower mold 200 below the pressure plate 220. The third pressure component 250 can extend and retract vertically, allowing the pressure plate 220 to float and rise relative to the lower mold base 210, and applying upward pressure to the pressure plate 220 during molding. In the open mold state, the pressure plate 220 is in a floating state driven by the third pressure component 250, with its upper surface positioned above or flush with the upper surface of the upper flanging blade 230, supporting the product to be flanged, i.e., the blanked sheet metal part 2. The circumferential edge of the blanked sheet metal part 2 is located above the upper flanging blade 230.

[0038] The upper flanging cutter 230 is fixed on the lower mold base 210 and located around the pressure plate 220. It is used to cooperate with the upper flanging forming plane 162 to form the circumferential flanging 1.1 when the mold is closed.

[0039] The side-flanging slider 240 is horizontally slidably disposed on the lower mold base 210, located above the outer periphery of the upper flanging cutter 230, and is used to slide horizontally to cooperate with the side-flanging die groove 163 to form the circumferential side flanging 1.2 after the circumferential flanging 1.1 is formed.

[0040] In some embodiments of this application, the cold stamping composite die further includes a side-flanging drive component for driving the side-flanging slider to slide horizontally.

[0041] In some embodiments of this application, cold stamping composite die forming Figure 1 and Figure 2 The specific process for the shell-type product 1 shown is as follows: As the mold begins to close and the upper mold 100 descends, the bottom surface of the stripper slider 160 is located below the bottom surface of the stripper plate 150. Therefore, the stripper slider 160 first contacts and abuts against the sheet metal part 2 after it has been unloaded from the pressure plate 220. Furthermore, the upward pressure of the third pressure component 250 on the pressure plate 220 is greater than the downward pressure applied by the second pressure component 180 to the stripper slider 160 through the top plate 120. As the upper mold 100 descends, the stripper slider 160 gradually moves upward and backward relative to the stripper plate 150 while pressing the sheet metal part 2. As the upper mold 100 continues to descend, the stripper plate 150 begins to contact the sheet metal part 2 after it has been unloaded from the pressure plate 220. The downward pressure of the first pressure component 170 on the stripper plate base 140 is greater than the upward pressure of the third pressure component 250 on the pressure plate 220. As a result, the stripper plate base 140 drives the stripper plate 150 to press down the sheet metal part 2 after it has been unloaded and the pressure plate 220 to move downward. Since the upper flanging blade 230 is fixed, as the upper mold 100 continues to descend, the stripper plate assembly, the sheet metal part 2 after it has been unloaded, and the pressure plate 220 continue to move downward. The upper flanging blade 230 and the upper flanging forming plane 162 of the stripper slider 160 cooperate to form the sheet metal part 2 after it has been unloaded by flanging 1.1 in the circumferential direction. When the stripper slider 160 moves down to the point where its side-flanging die aligns with the side-flanging slider 240, the side-flanging slider 240 slides horizontally into the side-flanging die groove 163 to form the circumferential side-flanging 1.2 of the blanked sheet metal part 2. At this point, the flanging forming is completed, and the blanked sheet metal part 2 is formed into a shell-type product 1. The mold opens, and the side-flipping slider 240, stripper plate 150, and stripper slider 160 are reset in sequence, separating from the outer shell product 1, and finally the product is demolded and taken out.

[0042] In some embodiments of this application, the first pressure component 170 can be a spring, a nitrogen cylinder, or a combination of both. Since the first pressure component 170 needs to provide a relatively large pressure value, while also minimizing costs, the first pressure component 170 is chosen to be a combination of springs and nitrogen cylinders, distributed in a dispersed manner. The nitrogen cylinder is the main force source, located near the center of the stripper plate base 140. Depending on the required force source size, the number of nitrogen cylinders can be one or two. Multiple springs are arranged circumferentially around the nitrogen cylinders. The dispersed arrangement of multiple springs and nitrogen cylinders ensures balanced and reliable force application to the stripper plate base 140, thereby ensuring balanced and reliable pressure from the stripper plate 150 on the sheet metal part.

[0043] A nitrogen cylinder mounting base is fixed on the bottom surface of the upper support plate 110 by screws. The nitrogen cylinder is fixedly installed on the nitrogen cylinder mounting base in an inverted position. The stripper plate base 140 is connected to the output end of the nitrogen cylinder.

[0044] Similarly, in some embodiments of this application, the third pressure component 250 can be a spring, a nitrogen cylinder, or a combination of a spring and a nitrogen cylinder. Since the space below the pressure plate 220 is relatively small, the number of third pressure components 250 should be small to facilitate installation. To achieve the same pressure value, the number of springs would be greater than the number of nitrogen cylinders. Therefore, the third pressure component 250 is selected to use only nitrogen cylinders for ease of installation.

[0045] In some embodiments of this application, the second pressure member 180 is a spring that is always in a compressed state. Its elastic force is applied downward to the top plate 120, causing the top plate 120 to press against the upper end of the stripping slider 160, thereby applying downward pressure to the stripping slider 160.

[0046] In some embodiments of this application, the lower mold 200 further includes a lower support plate 2100, and a lower mold base 210 is disposed on the lower support plate 2100 and located above the lower support plate 2100. Multiple lower pads can be disposed between the lower mold base 210 and the lower support plate 2100 to adjust the mold height.

[0047] In some embodiments of this application, such as Figure 20 As shown, the third pressure component 250 is installed on the lower support plate 2100 and multiple components are evenly distributed. The lower mold base 210 has a through portion for the output end of the third pressure component 250 to extend upward. Multiple limit screws 2400 are also provided on the lower mold base 210, which are connected to the upper pressure plate to help limit the upward movement of the upper pressure plate. Multiple support blocks 2300 are also provided on the lower mold base 210. When the mold is closed, the pressure plate 220 is supported by the third pressure component 250 and also by the multiple support blocks 2300, which can reliably support the pressure plate 220 and limit the downward movement of the pressure plate 220, thus ensuring the reliable operation of the pressure plate 220.

[0048] In some embodiments of this application, the outer contour of the shell product 1 is rectangular, and its four sides are formed with circumferential upward flanges 1.1 and circumferential side flanges 1.2. Correspondingly, the stripper slider 160 is arranged around the perimeter of the stripper plate 150. When the mold is closed and both the stripper slider 160 and the stripper plate 150 are in contact with the sheet metal part 2 after blanking, the lower outer contour of the stripper plate assembly is adapted to the inner contour of the shell product 1 to be formed; the pressure plate 220 is a rectangular plate, the upper flange blade 230 is arranged around the perimeter of the pressure plate 220, and the side flange slider 240 is arranged around the perimeter of the upper flange blade 230.

[0049] In some embodiments of this application, such as Figures 13 to 15 As shown, the multiple stripping sliders 160 include multiple corner stripping sliders 164 and multiple side stripping sliders 165. That is, all the stripping sliders 160 are divided into multiple corner stripping sliders 164 and multiple side stripping sliders 165, which are respectively arranged at each corner and each side of the stripping plate 150. The corner stripping sliders 164 and the side stripping sliders 165 are staggered, that is, the side stripping sliders 165 are between two adjacent corner stripping sliders 164, and the corner stripping sliders 164 are between two adjacent side stripping sliders 165. The corner stripping sliders 164 and the side stripping sliders 165 are adjacent to each other.

[0050] In the mold-closed position, for two adjacent corner stripper slides 164 and side stripper slides 165, the upper flange forming plane 162 of the corner stripper slide 164 is connected to and located in the same plane as the upper flange forming plane 162 of the side stripper slide 165, and the bottom surface of the side flange mold groove 163 of the corner stripper slide 164 is connected to and located in the same plane as the bottom surface of the side flange mold groove 163 of the side stripper slide 165. Figure 15 As shown.

[0051] By adopting the above structure, it can be ensured that the lower outer contour of the stripper plate assembly matches the inner contour of the shell product 1 to be formed during the flanging process, thus ensuring the forming accuracy. At the same time, the corner stripper slider 164 and the side stripper slider 165 are in different positions and have different movement angles, ensuring that all stripper sliders 160 do not interfere with each other when they move up and down at the same time, thereby achieving smooth demolding of the flanged and undercut surfaces around the product.

[0052] In some embodiments of this application, when the mold is closed, for two adjacent corner stripper slides 164 and side stripper slides 165, the lower outer surface of the corner stripper slide 164 partially overlaps with the lower outer surface of the side stripper slide 165, i.e., they have overlapping portions. For example... Figure 15 As shown, taking any two adjacent corner stripper sliders 164 and side stripper sliders 165 as examples, the lower outer contour of the corner stripper slider 164 is triangular, and the lower outer contour of the side stripper slider 165 is trapezoidal. The end of the hypotenuse of the corner stripper slider 164 overlaps with the corner side of the side stripper slider 165. This ensures that the adjacent corner stripper sliders 164 and side stripper sliders 165 can fit together as tightly as possible during mold closing, avoiding blank areas and improving the quality of flanging.

[0053] In some embodiments of this application, the upper flange forming plane 162 is a vertical plane, the bottom surface of the side flange mold groove 163 is a horizontal plane, and the upper flange forming plane 162 is vertically connected to the bottom surface of the side flange mold groove 163, thereby ensuring that the circumferential flange 1.1 of the shell product 1 is vertical and the circumferential side flange 1.2 is horizontal.

[0054] In some embodiments of this application, a limiting connecting block 190 is provided between the top plate 120 and the stripper slide 160. A through portion 141 is formed on the stripper plate base 140 for the limiting connecting block 190 to pass through. The limiting connecting block 190 extends vertically, passing through the through portion 141, with its upper end abutting against the top plate 120 and its lower end fixedly connected to the stripper slide 160. This allows the top plate 120 to abut against the stripper slide 160 via the limiting connecting block 190. This allows the top plate 120 and the stripper slide 160 to easily abut against each other even though they are located on different sides of the stripper plate base 140, which is beneficial for improving mold assembly efficiency.

[0055] Since the stripper slider 160 slides obliquely up and down relative to the stripper plate 150, and the lower end of the limiting connecting block 190 is fixedly connected to the stripper slider 160, the limiting connecting block 190 will also have a horizontal displacement while the stripper slider 160 moves vertically up and down. Therefore, the upper end of the limiting connecting block 190 cannot be fixedly connected to the top plate 120. In some embodiments of this application, the upper end of the limiting connecting block 190 only abuts against the bottom surface of the top plate 120, but is not connected, so as to ensure that the limiting connecting block 190 can slide horizontally relative to the top plate 120. The upper end of the limiting connecting block 190 forms a limiting structure, which is used to abut against the stripper plate base 140 in the fully open mold state, specifically against the top surface of the stripper plate base 140, to play a limiting role and restrict the stripper slider 160 from continuing to slide obliquely downward relative to the stripper plate 150 and detaching from the stripper plate 150.

[0056] In some embodiments of this application, the top plate 120 is also connected to the stripper plate base 140 by a plurality of distributed limiting screws, which are used to limit the upward movement of the top plate 120.

[0057] In some embodiments of this application, the limiting structure is a limiting protrusion 191. The top surface of the limiting protrusion 191 is in contact with and abuts against the bottom surface of the top plate 120. The cross-sectional area of ​​the limiting protrusion 191 is larger than the area of ​​the through portion 141 on the stripper plate base 140, so that the limiting connecting block 190 will not fall through the through portion 141, thereby restricting the stripper slider 160 from disengaging downward from the stripper plate 150.

[0058] For the side-flanging drive component used to drive the side-flanging slider 240 to slide horizontally and cooperate with the side-flanging die groove 163 to form the circumferential side-flanging 1.2, it can be a cylinder, oil cylinder, etc., but it requires additional air circuits, oil circuits and other related components, which leads to increased mold cost and complex structure.

[0059] To address this issue, in some embodiments of this application, such as Figure 5 , Figure 7 , Figure 11 , Figure 12, Figure 17 and Figure 18 As shown, a guide slope 241 is formed on the side-flanging slider 240; the side-flanging driving component is a shovel 1100, which is vertically set on the upper mold 100. The upper end of the shovel 1100 is fixedly connected to the upper support plate 110, and the lower end forms a side-pushing slope 1110; when the mold is closed, as the shovel 1100 moves down with the upper mold 100, the side-pushing slope 1110 of the shovel 1100 cooperates with the guide slope 241 of the side-flanging slider 240 to drive the side-flanging slider 240 to slide inward (i.e., towards the side-flanging cavity 163) until it cooperates with the side-flanging cavity 163 to achieve the forming of the circumferential side-flanging 1.2.

[0060] With the above structure, the horizontal sliding of the side-flipping slider 240 can be achieved through the mold's own mold closing action. Compared with setting up a cylinder or hydraulic cylinder, the structure is simple, does not require separate control, and helps to reduce mold costs and reduce mold failure points.

[0061] Regarding the reset of the side-flanged slider 240 during mold opening, in some embodiments of this application, a limiting seat 260 is fixed on the lower mold base 210, and the limiting seat 260 is located outside the side-flanged slider 240; an elastic member 270 is provided between the limiting seat 260 and the side-flanged slider 240, and the two ends of the elastic member 270 are respectively connected to the limiting seat 260 and the side-flanged slider 240. In the mold-opening state, the elastic member 270 is in a natural state. When the mold is closed, the shovel 1100 moves down with the upper mold 100 and inserts between the limiting seat 260 and the side-flanged slider 240. During the process of driving the side-flanged slider 240 to slide inward, the side-flanged slider 240 stretches the elastic member 270. The elastic member 270 stores force, so when the shovel 1100 moves upward and disengages from the side-flanged slider 240 during mold opening, the elastic force of the elastic member 270 drives the side-flanged slider 240 to slide outward and automatically reset.

[0062] In some embodiments of this application, such as Figure 6 , Figure 8 , Figure 11 and Figure 12 As shown, a pressure block 130 is fixed on the bottom surface of the stripper plate base 140. When the mold is closed, the pressure block 130 presses against the top surface of the side flange slider 240 to counteract the upward force generated by the flange part on the side flange slider 240 when the circumferential side flange 1.2 is formed, so that the circumferential side flange 1.2 can be formed smoothly.

[0063] In some embodiments of this application, such as Figure 17 , Figure 18 , Figure 20 and Figure 21As shown, a side stop 280 is fixed on the lower mold base 210, and the side stop 280 is located outside the side flange slider 240. When the mold is closed, the side of the lower end of the shovel 1100 that is opposite to the side push inclined surface 1110 abuts against the side stop 280. The side stop 280 can act as a horizontal stop for the lower end of the shovel 1100 and exert a squeezing force on the lower end of the shovel 1100 toward the side flange slider 240, so that the lower end of the shovel 1100 can stably and reliably push the side flange slider 240 to move.

[0064] The side block 280 is covered with a copper alloy plate 281 on the surface that abuts against the lower end of the loader 1100. The copper alloy plate 281 contacts the lower end of the loader 1100, reducing wear and improving the service life of the loader 1100 and the side block 280.

[0065] In some embodiments of this application, such as Figures 17 to 21 As shown, a sliding base 290 is fixed on the lower mold base 210. The sliding base 290 is located below the side-flanging slider 240, and a horizontal sliding guide structure is provided between the sliding base 290 and the side-flanging slider 240. The sliding base 290 can support the side-flanging slider 240, and the horizontal sliding guide structure can guide the horizontal sliding of the side-flanging slider 240, preventing the side-flanging slider 240 from sliding off-center, which helps to improve the flanging forming accuracy.

[0066] like Figure 21 As shown, in some embodiments of this application, the horizontal sliding guide structure includes a dovetail slider female insert 291 fixedly disposed on the top surface of the sliding base 290 and a dovetail slider male insert 292 fixedly disposed on the bottom surface of the side flange slider 240. Of course, the horizontal sliding guide structure can also be other structures, such as guide grooves and guide protrusions, and no specific limitation is made here.

[0067] Similarly, Figure 21 As shown, in some embodiments of this application, a copper alloy standard sliding plate 293 located on both sides of the dovetail slider insert 291 is also fixed on the top surface of the sliding base 290, so that it contacts the bottom surface of the side-flipped slider 240, reducing wear and improving the service life of the side-flipped slider 240 and the sliding base 290.

[0068] In some embodiments of this application, multiple sets of guide post and guide sleeve structures 2200 are further arranged between the lower die holder 210 and the pressure plate 220, such as... Figure 20 As shown, a guide post and guide sleeve structure is also provided between the upper mold 100 and the lower mold 200 to guide the opening and closing of the upper mold.

[0069] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0070] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

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