A kind of cambered convex part stamping processing die

Abstract

The utility model discloses a kind of arc surface convex hull part stamping processing die, it is related to part processing die technical field, including lower die mechanism and upper die mechanism, lower die mechanism includes lower die plate and material guiding vertical hole, two rows of material guiding vertical hole are set up on the lower die plate at equal distance, material guiding vertical hole is respectively installed with tape positioning guide mechanism in each, the upper side middle part of lower die plate is sequentially provided with punching area, upper edge cutting shaping area, lower edge cutting shaping area, middle extrusion square area, middle pressure arc surface area, pressure convex hull area, outer edge cutting area and blanking area from left to right;Upper die mechanism includes upper die holder, upper die holder is located above lower die plate, the lower side of upper die holder is installed with upper backing plate, the lower side of upper backing plate is installed with upper clamping plate.The arc surface convex hull part stamping processing die is provided with convex hull forming mechanism in pressure convex hull area, and the inner arc surface convex hull is formed by pressing from top to bottom, and arc surface convex hull part can be efficiently processed.

Description

Technical Field

[0001] This utility model relates to the field of parts processing mold technology, specifically a stamping mold for parts with arc-shaped convex bumps. Background Technology

[0002] When fixing a workpiece, a part with an arc-shaped protrusion is required. This part has four inner arc-shaped protrusions in the arc area. The bottom surface of the inner arc-shaped protrusions is parallel to the tangent of the arc surface of the part. In the traditional stamping production method, the punch is vertically downward, which makes it impossible to process this kind of protrusion. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a stamping die for parts with arc-shaped convex bumps. It is a multi-station continuous stamping die with a convex bump forming mechanism in the convex bump area. The upper and lower parts are pressed together to form an inner arc-shaped convex bump, which can efficiently process parts with arc-shaped convex bumps and effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a stamping die for a part with an arc-shaped convex bulge, comprising a lower die mechanism, the lower die mechanism including a lower template and guide vertical holes, the lower template having two rows of guide vertical holes spaced at equal intervals, each guide vertical hole having a material strip positioning and guiding mechanism installed therein, the upper middle part of the lower template having, from left to right, a punching area, an upper edge punching and shaping area, a lower edge punching and shaping area, a middle extrusion square area, a middle arc-shaped area, a convex bulge area, an outer edge cutting area, and a blanking area; Also includes: The upper mold mechanism includes an upper mold base, an upper pad, an upper clamping plate, and a demolding assembly. The upper mold base is located above the lower mold plate. An upper pad is installed on the lower side of the upper mold base, an upper clamping plate is installed on the lower side of the upper pad, and a demolding assembly is installed on the lower side of the upper clamping plate.

[0005] The strip passes between the front and rear strip positioning and guiding mechanisms. These mechanisms limit and guide the strip, which is then driven to move left and right by an external drive unit. Each rightward movement corresponds to one processing area or workstation. The hydraulic cylinder of the stamping equipment moves the upper die base, upper pad, and upper clamping plate downwards, allowing the strip to be punched in conjunction with the punching area. The upper edge punching and shaping area is used to punch out the rear side of parts with curved convex protrusions, and the lower edge punching and shaping area is used to punch out the front side of parts with curved convex protrusions. The middle extrusion... The square area in the middle of the part with the curved convex shape is extruded in the square area. The middle is pressed into an arc surface area to press the square area in the middle of the part with the curved convex shape into an arc surface. The inner arc surface convex shape is pressed out at the arc surface area. The outer edge cutting area cuts off the connection between the part with the curved convex shape and the material strip. Then the material unloading operation is completed in the unloading area. The material strip passes through the above processing areas in sequence as it moves from left to right, and the above processing is completed in sequence. This realizes multi-station continuous stamping operation, which can improve the production and processing efficiency of parts with curved convex shapes.

[0006] Furthermore, it also includes an upper die punching assembly, which comprises a bolt, a module, and punches. Module 1 is fixedly connected to the lower left side of the upper die base, corresponding to the punching area, via bolt 1. The bottom of module 1 passes through through slots in the upper pad and upper clamping plate, and two vertical punches are fixedly connected to the front and rear sides of the bottom of module 1, respectively. Two punches are formed in the punching area corresponding to the positions of the two punches. Bolt 1 is used to install and fix module 1 on the upper die base. As module 1 moves downwards with the upper die base, it drives the two punches to punch through the material strip, thus punching through holes in parts with curved convex protrusions.

[0007] Furthermore, it also includes an arc-shaped stamping assembly, which comprises two bolts, two modules, and an arc-shaped boss. The top of module two is fixedly connected to the lower side of the upper die base, corresponding to the position of the central arc-shaped area, via bolt two. The bottom of module two passes through the hollowed-out slots on the upper pad and upper clamping plate, and the top of the arc-shaped boss is fixedly connected to the center of the bottom of module two. An arc-shaped groove that mates with the arc-shaped boss is provided in the center of the central arc-shaped area. Bolt two is used to install module two. As module two moves downwards with the upper die base, the arc-shaped boss at its bottom, in conjunction with the arc-shaped groove, stamps the arc surface onto the main body of the arc-shaped part with the arc-shaped protrusion.

[0008] Furthermore, it also includes a convex bulge forming mechanism, which comprises an upper convex bulge die assembly and a lower convex bulge die assembly. The lower convex bulge die assembly is installed in the convex bulge extrusion area, and the upper convex bulge die assembly is installed on the lower side of the upper die base at a position corresponding to the convex bulge extrusion area. The upper convex bulge die assembly and the lower convex bulge die assembly are pressed together, which can stamp four inner arc-shaped convex bulges on the arc surface of the arc-shaped part body.

[0009] Furthermore, the convex hull lower mold assembly includes a lower module, mold pillars, a positioning mold base, an arc-shaped groove, ear seats II, mold base bolts, and disassembly bolts. The pressing convex hull area has a positioning groove, and a positioning mold base is provided in the positioning groove. Two ear seats II are respectively provided at the front and rear ends of the positioning mold base. The two ear seats II are fixedly connected to the bottom of the positioning groove by the mold base bolts. The top of the positioning mold base is fixedly connected to the lower module by the disassembly bolts. An arc-shaped groove is provided in the middle of the upper side of the lower module. Four vertical through slots are provided at the bottom of the lower module. The tops of the four vertical through slots communicate with the arc-shaped groove. Four mold pillars are fixedly connected to the positioning mold base at the positions corresponding to the four vertical through slots. The tops of the four mold pillars pass through the corresponding vertical through slots and extend to the bottom of the arc-shaped groove. The ear seat and the mold seat bolts work together to fix the positioning mold seat in the positioning groove. The bolts can be removed to detachably connect the lower module and the positioning mold seat together. The tops of the four mold pillars extend into the bottom of the arc-shaped groove, which is used to stamp four inner arc-shaped protrusions on the arc surface of the main body of the arc-shaped part. The lower mold assembly of the protrusions is detachable as a whole, which makes it convenient to replace each part according to the wear condition.

[0010] Furthermore, the convex hull lower mold assembly also includes positioning holes. Two positioning holes are formed at the bottom of the positioning mold base, and two positioning posts are fixedly connected within the positioning groove. Each positioning post engages with one of the two positioning holes. The positioning holes and positioning posts improve the precise installation of the positioning mold base and the lower module.

[0011] Furthermore, the upper mold assembly for the convex hull includes an upper module, a lug, an arc-shaped protrusion, and a groove. The upper module is located on the lower side of the upper mold base corresponding to the position where the convex hull area is pressed out. Two lugs are respectively located at the front and rear ends of the upper module. The lugs are fixedly connected to the lower side of the upper mold base by lug bolts. An arc-shaped protrusion that mates with the arc-shaped groove is located at the bottom of the upper module. The bottom arc surface of the arc-shaped protrusion has a groove that mates with the top of the mold post. The arc-shaped protrusion and the arc-shaped groove work together to fix the arc surface of the main body of the arc-shaped part. The top of the mold post, in conjunction with the groove, presses out the inner arc-shaped convex hull.

[0012] Compared with existing technologies, the advantages of this stamping die for parts with curved convex bulges are: 1. This stamping die for parts with curved convex surfaces allows the strip material to pass between two rows of strip positioning and guiding mechanisms. The strip positioning and guiding mechanisms limit and guide the strip material, and the strip material is driven to move left and right with the help of an external drive device. Each time the strip material moves to the right, it moves one processing area or station. As the strip material moves from left to right, it passes through each processing area in sequence and completes the above processing in sequence, realizing multi-station continuous stamping operation, which can improve the production efficiency of parts with curved convex surfaces.

[0013] 2. This stamping die for parts with curved convex surfaces is a multi-station continuous stamping die. A convex convex forming mechanism is set in the convex convex area. The upper and lower parts are pressed together to form an inner curved convex surface, which can efficiently process parts with curved convex surfaces. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a top view of the lower template structure of this utility model; Figure 3 This is a schematic diagram of the structure of the material belt positioning and guiding mechanism of this utility model; Figure 4 This is a schematic diagram of the convex bulge forming mechanism in this utility model; Figure 5 This is a side view of the convex bulge forming mechanism in this utility model. Figure 6 This is a schematic diagram of the material strip to be processed in this utility model; Figure 7 This is a schematic diagram of the arc-shaped convex part manufactured according to this utility model; In the diagram: 1. Lower mold mechanism, 11. Lower mold base, 12. Lower backing plate, 13. Lower template, 14. Guide vertical hole, 2. Strip positioning and guiding mechanism, 21. Mounting base, 22. Sliding column, 23. Spring, 24. Sliding sleeve, 25. Guide column, 26. Strip annular guide groove, 3. Upper mold mechanism, 31. Upper mold base, 32. Upper backing plate, 33. Upper clamping plate, 34. Stop plate, 35. Anti-detachment plate, 36. Long bolt, 37. Positioning guide column, 38. Telescopic rod, 39. Demolding spring, 4. Upper mold punching assembly, 41. Bolt 1, 42. Module 1, 43. Punch, 5. Arc-shaped stamping assembly, 51. Bolt 2, 52. Module 2, 53. Arc-shaped boss, 6. convex... The following components are listed: forming mechanism, upper module, ear seat 1, arc-shaped protrusion, groove, lower module, mold column, positioning mold base, arc-shaped groove, ear seat 2, mold base bolt, disassembly bolt, positioning hole, material strip, part with arc-shaped protrusion, main body of arc-shaped part, through hole, inner arc-shaped protrusion, punching area, upper edge punching and shaping area, lower edge punching and shaping area, middle extrusion square area, middle pressing arc surface area, 106 pressing protrusion area, outer edge cutting area, and blanking area. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Example 1, please refer to Figures 1 to 7 This utility model provides a technical solution: a stamping die for a part with an arc-shaped convex bulge, including a lower die mechanism 1. The lower die mechanism 1 includes a lower template 13 and guide vertical holes 14. Two rows of guide vertical holes 14 are equally spaced on the lower template 13. A material strip positioning and guiding mechanism 2 is installed in each guide vertical hole 14. The upper middle part of the lower template 13 is provided with a punching area 101, an upper edge punching and shaping area 102, a lower edge punching and shaping area 103, a middle extrusion square area 104, a middle arc-shaped area 105, an extruded convex bulge area 106, an outer edge cutting area 107, and a blanking area 108 from left to right.

[0017] The lower mold mechanism 1 also includes a lower mold base 11 and a lower pad 12. The lower pad 12 is installed on the upper side of the lower mold base 11. The upper side of the lower pad 12 is connected to the bottom of the lower template 13. The lower pad 12 is placed between the lower mold base 11 and the lower template 13 to promote the stable installation of the lower template 13.

[0018] It also includes an upper mold mechanism 3, which includes an upper mold base 31, an upper pad 32, an upper clamping plate 33 and a demolding assembly. The upper mold base 31 is located above the lower mold plate 13. The upper pad 32 is installed on the lower side of the upper mold base 31. The upper clamping plate 33 is installed on the lower side of the upper pad 32. The demolding assembly is installed on the lower side of the upper clamping plate 33.

[0019] The upper mold mechanism 3 also includes long bolts 36, and the upper pad 32 and the upper clamping plate 33 are fixedly connected to the upper mold base 31 by the long bolts 36.

[0020] An inverted U-shaped groove is provided at the upper edge punching and shaping area 102, and an inverted U-shaped pressure strip that mates with the inverted U-shaped groove is provided at the bottom of the upper clamping plate 33. A U-shaped groove is provided at the lower edge punching and shaping area 103, and a U-shaped pressure strip that mates with the U-shaped groove is provided at the bottom of the upper clamping plate 33.

[0021] It also includes an upper die punching assembly 4, which comprises a bolt 41, a module 42, and punches 43. The module 42 is fixedly connected to the lower left side of the upper die base 31, corresponding to the punching area 101, via bolt 41. The bottom of the module 42 passes through through slots on the upper pad 32 and the upper clamping plate 33, respectively. Two vertical punches 43 are fixedly connected to the front and rear sides of the bottom of the module 42. Two punches are formed in the punching area 101 corresponding to the positions of the two punches 43. Bolt 41 is used to install and fix the module 42 on the upper die base 31. As the upper die base 31 moves downward, the module 42 drives the two punches 43 to punch the strip 7, thus punching through holes 82 in the part 8 with curved protrusions.

[0022] It also includes an arc-shaped stamping assembly 5, which comprises a second bolt 51, a second module 52, and an arc-shaped boss 53. The top of the second module 52 is fixedly connected to the lower side of the middle part of the upper die base 31, corresponding to the position of the middle arc-shaped area 105, by the second bolt 51. The bottom of the second module 52 passes through the hollowed-out slots on the upper pad 32 and the upper clamping plate 33, and the top of the arc-shaped boss 53 is fixedly connected to the center of the bottom of the second module 52. An arc-shaped groove that mates with the arc-shaped boss 53 is opened in the middle of the middle arc-shaped area 105. The second bolt 51 is used to install the second module 52. As the upper die base 31 moves down, the second module 52, through the arc-shaped boss 53 at its bottom and the arc-shaped groove, stamps an arc surface on the arc-shaped part body 81 of the part with the arc-shaped protrusion part 8.

[0023] It also includes a convex bulge forming mechanism 6, which includes an upper convex bulge die assembly and a lower convex bulge die assembly. The lower convex bulge die assembly is installed in the convex bulge area 106, and the upper convex bulge die assembly is installed on the lower side of the upper die base 31 at the position corresponding to the convex bulge area 106. The upper convex bulge die assembly and the lower convex bulge die assembly are pressed together, which can stamp four inner arc convex bulges 83 on the arc surface of the arc part body 81.

[0024] The convex hump lower mold assembly includes a lower module 65, mold pillars 66, a positioning mold base 67, an arc-shaped groove 68, ear seats 69, mold base bolts 610, and disassembly bolts 611. The convex hump area 106 has a positioning groove, and the positioning mold base 67 is provided in the positioning groove. Two ear seats 69 are respectively provided at the front and rear ends of the positioning mold base 67. The two ear seats 69 are fixedly connected to the bottom of the positioning groove by the mold base bolts 610. The lower module 65 is fixedly connected to the top of the positioning mold base 67 by the disassembly bolts 611. An arc-shaped groove 68 is provided in the middle of the upper side of the lower module 65. Four vertical through slots are provided at the bottom of the lower module 65. The tops of the four vertical through slots communicate with the arc-shaped groove 68. Four mold pillars 66 are fixedly connected to the positioning mold base 67 at the positions corresponding to the four vertical through slots. The tops of the four mold pillars 66 pass through the corresponding vertical through slots and extend to the bottom of the arc-shaped groove 68. Ear seat 69 and mold seat bolt 610 work together to fix the positioning mold seat 67 in the positioning groove. Remove bolt 611 to detachably connect the lower module 65 and the positioning mold seat 67 together. The top of the four mold pillars 66 extends into the bottom of the arc-shaped groove 68 to stamp four inner arc-shaped protrusions 83 on the arc surface of the arc-shaped part body 81. The lower mold assembly of the protrusions is detachable as a whole, which facilitates the replacement of each part according to the wear condition.

[0025] The convex hull lower mold assembly also includes positioning holes 612. Two positioning holes 612 are formed at the bottom of the positioning mold base 67, and two positioning pins are fixedly connected within the positioning groove. Each positioning pin engages with one of the two positioning holes 612. The positioning holes 612 and positioning pins improve the precise installation of the positioning mold base 67 and the lower module 65.

[0026] The upper mold assembly for the convex hull includes an upper module 61, ear seats 62, an arc-shaped protrusion 63, and a groove 64. The upper module 61 is located on the lower side of the upper mold base 31 at the position corresponding to the position where the convex hull area 106 is pressed out. Two ear seats 62 are respectively provided at the front and rear ends of the upper module 61. The ear seats 62 are fixedly connected to the lower side of the upper mold base 31 by ear seat bolts. The bottom of the upper module 61 is provided with an arc-shaped protrusion 63 that mates with the arc-shaped groove 68. The bottom arc surface of the arc-shaped protrusion 63 has a groove 64 that mates with the top of the mold post 66. The arc-shaped protrusion 63 and the arc-shaped groove 68 work together to fix the arc surface of the arc-shaped part body 81. The top of the mold post 66 mates with the groove 64 to press out the inner arc-shaped convex hull 83.

[0027] The machined part 8 with an arc-shaped convex bulge has the following specific structure: an arc-shaped part body 81, a through hole 82, and an inner arc-shaped convex bulge 83, such as... Figure 7 As shown, the middle part of the arc-shaped part body 81 is an arc-shaped structure. The arc-shaped part body 81 has four inner arc-shaped protrusions 83 at the corresponding positions of the arc-shaped structure. Two through holes 82 are formed at both ends of the arc-shaped part body 81 by stamping.

[0028] In use, the strip 7 passes between the front and rear strip positioning and guiding mechanisms 2. The strip positioning and guiding mechanisms 2 limit and guide the strip 7. With the help of an external drive device, the strip 7 moves left and right. Each time the strip 7 moves to the right, it moves one processing area or station. The hydraulic cylinder of the stamping equipment drives the upper die base 31, the upper pad 32 and the upper clamping plate 33 to move down. In conjunction with the punching area 101, the strip 7 can be punched. The upper edge punching and shaping area 102 is used to punch out the rear side of the part 8 with the arc-shaped protrusion, and the lower edge punching and shaping area 103 is used to punch out the front side of the part 8 with the arc-shaped protrusion. The square area 104 in the middle of the arc-shaped protrusion part 8 is extruded. The square area in the middle of the arc-shaped protrusion part 8 is pressed into an arc surface in the middle area 105. The protrusion area 106 is pressed out to form an inner arc protrusion at the arc surface. The outer edge cutting area 107 cuts off the connection between the arc-shaped protrusion part 8 and the material strip 7. Then the material unloading operation is completed in the unloading area 108. The material strip 7 passes through the above processing areas in sequence as it moves from left to right, and completes the above processing in sequence. This realizes multi-station continuous stamping operation, which can improve the production and processing efficiency of the arc-shaped protrusion part 8.

[0029] Example 2, please refer to Figures 1 to 7 This utility model provides a technical solution: a stamping die for parts with arc-shaped convex bumps. This embodiment is a further explanation of the structure of Embodiment 1. The strip positioning and guiding mechanism 2 includes a mounting base 21, a sliding column 22, a spring 23, a sliding sleeve 24, a guide column 25, and a strip annular guide groove 26. A guide column 25 is vertically slidably connected within each guide vertical hole 14. A strip annular guide groove 26 is provided on the outer periphery of the top of the guide column 25. The front and rear sides of the strip 7 are respectively located within the corresponding strip annular guide groove 26. The strip annular guide groove 26 limits the rightward movement of the strip 7. A vertical through groove is provided on the lower mold base 11 corresponding to the guide vertical hole 14. A mounting base 21 is provided at the bottom of the vertical through groove. The top center of the mounting base 21 is fixedly connected to the bottom of the sliding column 22. The sliding column 22 and the sliding sleeve 24 are vertically slidably connected. The sliding sleeve 24 is fixed to the bottom of the guide column 25. The top of the sliding column 22 is connected to the guide column 25. The bottom of column 25 is connected by a blind hole. A spring 23 is sleeved on the bottom of the sliding column 22. The upper and lower ends of the spring 23 are connected to the sliding sleeve 24 and the mounting base 21, respectively. The lower pad 12 is provided with a hollow groove corresponding to the guide vertical hole 14 to prevent the lower pad 12 from interfering with the work of the strip positioning and guiding mechanism 2. During stamping, the upper die mechanism 3 abuts against the top of the guide column 25, allowing the guide column 25 and the sliding sleeve 24 to slide down along the sliding column 22. The spring 23 is compressed, allowing the strip 7 to contact each processing area on the lower die plate 13 for stamping. Then the upper die mechanism 3 moves up, the spring 23 returns to its original position and extends, pushing the guide column 25 and the sliding sleeve 24 to move up along the sliding column 22, allowing the strip 7 to leave each processing area, avoiding the protruding parts of each processing area from affecting the movement of the strip 7 from left to right.

[0030] Example 3, please refer to Figures 1 to 7 This utility model provides a technical solution: a stamping die for parts with arc-shaped convex bumps. This embodiment is a further explanation of the structure of Embodiment 1. The demolding assembly includes a stop plate 34, a release plate 35, a positioning guide post 37, a telescopic rod 38, and a demolding spring 39. The bottom of the upper mold base 31 is fixedly connected to the top of the telescopic rod 38. The telescopic rod 38 passes through the plate slots on the upper pad 32 and the upper clamping plate 33 and connects to the top of the stop plate 34. The demolding spring 39, which is a compression spring, is sleeved on the telescopic rod 38. The release plate 35 is installed at the bottom of the stop plate 34. The bottom of the upper mold base 31 is fixedly connected to the top of the positioning guide post 37. The positioning guide post 37 and the stop plate 35 are connected to the top of the upper mold base 31. The guide holes on plate 34 and anti-detachment plate 35 are slidably connected. When the upper mold mechanism 3 presses downward, anti-detachment plate 35 abuts against the upper side of the strip 7. The stamping part at the bottom of the upper mold base 31 presses the strip 7 through the stamping cutout grooves on the stop plate 34 and anti-detachment plate 35. At this time, the telescopic rod 38 is shortened and the demolding spring 39 is compressed. When the upper mold mechanism 3 moves upward, the demolding spring 39 and the telescopic rod 38 are extended, allowing the stop plate 34 and anti-detachment plate 35 to leave the upper mold base 31. The anti-detachment plate 35 pushes the strip 7 to detach from the stamping part at the bottom of the upper mold base 31.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stamping die for a part with an arc-shaped convex bulge, comprising a lower die mechanism (1), characterized in that, The lower die mechanism (1) includes a lower die plate (13) and a guide vertical hole (14). Two rows of guide vertical holes (14) are equally spaced on the lower die plate (13). A material strip positioning guide mechanism (2) is installed in each guide vertical hole (14). The upper middle part of the lower die plate (13) is provided with a punching area (101), an upper edge punching and shaping area (102), a lower edge punching and shaping area (103), a middle extrusion square area (104), a middle arc-shaped area (105), an extrusion convex area (106), an outer edge cutting area (107), and a material unloading area (108) from left to right. Also includes: The upper mold mechanism (3) includes an upper mold base (31), an upper pad (32), an upper clamping plate (33) and a demolding assembly. The upper mold base (31) is located above the lower mold plate (13). The upper pad (32) is installed on the lower side of the upper mold base (31), the upper clamping plate (33) is installed on the lower side of the upper pad (32), and the demolding assembly is installed on the lower side of the upper clamping plate (33).

2. The stamping die for a part with an arc-shaped convex bulge according to claim 1, characterized in that: It also includes an upper die punching assembly (4), which includes a bolt (41), a module (42) and a punch (43). The lower left side of the upper die base (31) is fixedly connected to the module (42) at the position corresponding to the punching area (101) by the bolt (41). The bottom of the module (42) passes through the through slots on the upper pad (32) and the upper clamping plate (33) respectively, and two vertical punches (43) are fixedly connected to the front and rear sides of the bottom of the module (42). Two punches are opened at the positions of the two punches (43) in the punching area (101).

3. The stamping die for a part with an arc-shaped convex bulge according to claim 1, characterized in that: It also includes an arc-shaped stamping assembly (5), which includes a bolt (51), a module (52) and an arc-shaped boss (53). The lower part of the middle of the upper die base (31) is fixedly connected to the top of the module (52) through the bolt (51) at the position corresponding to the middle arc-shaped area (105). The bottom of the module (52) passes through the hollowed-out grooves on the upper pad (32) and the upper clamping plate (33) respectively. The bottom center of the module (52) is fixedly connected to the top of the arc-shaped boss (53). The middle part of the middle arc-shaped area (105) is provided with an arc-shaped groove that cooperates with the arc-shaped boss (53).

4. The stamping die for a part with an arc-shaped convex bulge according to claim 1, characterized in that: It also includes a convex hull forming mechanism (6), which includes an upper convex hull mold assembly and a lower convex hull mold assembly. The lower convex hull mold assembly is installed in the convex hull pressing area (106), and the upper convex hull mold assembly is installed on the lower side of the upper mold base (31) at the position corresponding to the convex hull pressing area (106).

5. A stamping die for a part with an arc-shaped convex bulge according to claim 4, characterized in that: The convex hull lower mold assembly includes a lower module (65), a mold column (66), a positioning mold base (67), an arc-shaped groove (68), ear seats (69), a mold base bolt (610), and a disassembly bolt (611). The pressed convex hull area (106) has a positioning groove, and a positioning mold base (67) is provided in the positioning groove. Two ear seats (69) are respectively provided at the front and rear ends of the positioning mold base (67). The two ear seats (69) are fixedly connected to the bottom of the positioning groove by the mold base bolt (610). The top of the base (67) is fixedly connected to the lower module (65) by the disassembly bolt (611). The upper middle part of the lower module (65) is provided with an arc-shaped groove (68). The bottom of the lower module (65) is provided with four vertical through slots. The top of the four vertical through slots communicates with the arc-shaped groove (68). The positioning mold base (67) is fixedly connected with four mold pillars (66) at the positions corresponding to the four vertical through slots. The tops of the four mold pillars (66) pass through the corresponding vertical through slots and extend to the bottom of the arc-shaped groove (68).

6. A stamping die for a part with an arc-shaped convex bulge according to claim 5, characterized in that: The convex hull lower mold assembly also includes a positioning hole (612). The bottom of the positioning mold base (67) has two positioning holes (612). Two positioning posts are fixedly connected in the positioning groove. The two positioning posts are respectively connected to the two positioning holes (612).

7. A stamping die for a part with an arc-shaped convex bulge according to claim 6, characterized in that: The convex hull upper mold assembly includes an upper module (61), a lug (62), an arc-shaped protrusion (63), and a groove (64). The upper module (61) is provided on the lower side of the upper mold base (31) at the position where the convex hull area (106) is pressed out. Two lugs (62) are provided at the front and rear ends of the upper module (61). The lugs (62) are fixedly connected to the lower side of the upper mold base (31) by lug bolts. The bottom of the upper module (61) is provided with an arc-shaped protrusion (63) that cooperates with the arc-shaped groove (68). The bottom arc surface of the arc-shaped protrusion (63) is provided with a groove (64) that cooperates with the top of the mold column (66).

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