Splicing type metal bent plate stamping die

Abstract

The invention discloses a splicing type metal bent plate stamping die, and relates to the technical field of metal single plate stamping, the splicing type metal bent plate stamping die comprises an upper stamping die and a lower stamping die, the upper stamping die comprises a plurality of upper die strips, the plurality of upper die strips are horizontally arranged at equal intervals to form the upper stamping die, and the lower stamping die comprises lower die strips; a traditional integral type mold profile is decomposed into a series of standardized upper mold strips and lower mold strips, and the single upper mold strips and the single lower mold strips are spliced into a complete mold with the needed profile through a fixing device like building blocks. When the metal single plate needs to be changed, only the upper stamping die and the lower stamping die need to be dismantled through the fixing device, all the single upper die strips and the single lower die strips are arranged and combined again, a die suitable for a new metal single plate can be rapidly reconstructed, and a fixing structure on the fixing device can be completely reused.

Description

Technical Field

[0001] This invention relates to the field of metal sheet stamping technology, and more particularly to a spliced ​​metal curved sheet stamping die. Background Technology

[0002] Metal sheet stamping dies are the core process equipment in the field of metal sheet plastic forming. They are mainly used to process aluminum sheets. They use a press to apply pressure to the metal sheet, causing it to undergo plastic deformation or separation in the mold cavity, thereby obtaining a specific shape.

[0003] Currently, most traditional stamping dies used in the industry are one-piece structures, typically made by gluing together multiple layers of wooden boards. The die is then cut to the shape of the aluminum sheet to be processed. While this type of die has the advantage of high strength, it also has many limitations in the face of current market trends. One-piece dies are usually only designed for processing a single specific size of sheet metal. When the sheet metal design changes, or even just a minor adjustment to the size or shape, the original one-piece die may become unusable, requiring the manufacture of a new die, resulting in huge waste of resources and capital investment. Furthermore, for multi-variety, small-batch production models, companies need to stock a large number of dies for different products, occupying huge storage space, and their daily maintenance and management are also a heavy task. At the same time, if the product dimensions or formability are found to be substandard during the die debugging stage, it is very difficult to modify the one-piece die, often requiring reprocessing or even scrapping and rebuilding, further increasing development risks and costs.

[0004] Therefore, a splicing metal curved plate stamping die is needed to solve the problem of increased costs caused by the inability of existing metal single plate stamping dies to accommodate multiple stamping requirements. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a splicing metal curved plate stamping die.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A splicing metal curved plate stamping die includes an upper stamping die and a lower stamping die. The upper stamping die includes an upper die strip, and there are multiple upper die strips. The multiple upper die strips are placed horizontally at equal intervals to form the upper stamping die. The lower stamping die includes a lower die strip, and there are multiple lower die strips. The multiple lower die strips are placed horizontally at equal intervals to form the lower stamping die. The outer walls of both the upper and lower stamping dies are fixedly fitted with fixing devices. The fixing device includes a first fixing workpiece located on the front side of the upper stamping die. A second fixing workpiece is provided on one side of the upper stamping die. Both ends of the first fixing workpiece are provided with connecting structures. One end of the first fixing workpiece is fixedly connected to the second fixing workpiece through the connecting structures. A third fixing workpiece is provided on the other side of the upper stamping die. The other end of the first fixing workpiece is fixedly connected to the third fixing workpiece through the connecting structures. A fourth fixing workpiece is provided on the back side of the upper stamping die. One end of the fourth fixing workpiece is fixedly connected to the other end of the third fixing workpiece through the connecting structures. The other end of the fourth fixing workpiece is fixedly connected to the other end of the second fixing workpiece through the connecting structures. The first fixing workpiece and the second fixing workpiece have the same structure. The third fixing workpiece and the fourth fixing workpiece have the same structure.

[0007] Preferably, the first fixed workpiece includes a first upper horizontal bar, one end of the first upper horizontal bar is fixedly connected to a first connecting plate, the other end of the first upper horizontal bar is fixedly connected to a second connecting plate, the outer wall of the first connecting plate is fixedly connected to a first lower horizontal bar, a first nut is fixedly connected between the first upper horizontal bar and the first lower horizontal bar, and the other end of the first lower horizontal bar is fixedly connected to the outer wall of the second connecting plate. A first screw is threaded onto the first nut. A first extrusion plate is provided at the end of the first screw near the upper stamping die. The first extrusion plate is in contact with the outer wall of the upper stamping die, and the first screw is in contact with the first extrusion plate.

[0008] Preferably, there are multiple first nuts and multiple first screws, and the multiple first nuts are arranged at equal intervals along the horizontal direction of the first upper horizontal bar.

[0009] Preferably, a second screw is threadedly connected to the second fixed workpiece, and a second extrusion plate is provided at the end of the second screw near the upper stamping die. The second extrusion plate is in contact with the outer wall of the upper stamping die and the second screw. There are multiple second screws, and the multiple second screws are arranged at equal intervals along the horizontal direction of the second fixed workpiece.

[0010] Preferably, the third fixed workpiece includes a second upper horizontal bar, one end of which is fixedly connected to a third connecting plate, and the other end of which is fixedly connected to a fourth connecting plate. A second lower horizontal bar is fixedly connected to the outer wall of the third connecting plate. There is a gap between the second upper horizontal bar and the second lower horizontal bar, and the other end of the second lower horizontal bar is fixedly connected to the outer wall of the fourth connecting plate.

[0011] Preferably, one side of the first connecting plate extends outward, and an elongated hole is provided at the extended end of the first connecting plate. The first connecting plate is in contact with the second upper horizontal bar and the second lower horizontal bar. The elongated hole is located between the second upper horizontal bar and the second lower horizontal bar. The first connecting plate and the third fixed workpiece are fixedly connected by a connecting structure.

[0012] Preferably, the connecting structure includes a first fixing plate, a second fixing plate, and a third screw. The first fixing plate is located outside the first connecting plate, and the second fixing plate is located outside the second upper crossbar and the third connecting plate. The outer walls of the first fixing plate and the second fixing plate are provided with through holes. The third screw passes through the through hole of the first fixing plate, the oblong hole, the gap between the second upper crossbar and the second lower crossbar, and the through hole of the second fixing plate in sequence. The outer wall of the third screw is threaded with a second nut.

[0013] Preferably, the first fixing plate, the second fixing plate, the third screw, and the second nut are all in two sets, and the two sets of the first fixing plate, the second fixing plate, the third screw, and the second nut are arranged at equal intervals.

[0014] Preferably, both the first fixed workpiece and the fourth fixed workpiece are provided with an installation structure, and there are multiple installation structures arranged at equal intervals.

[0015] Preferably, the mounting structure includes a mounting component, the bottom of which is inserted between the first upper horizontal bar and the first lower horizontal bar, a threaded sleeve is fixedly connected to the top of the mounting component, a fourth screw is threadedly connected to the inside of the threaded sleeve, and a rubber disc is fixedly connected to the bottom of the fourth screw.

[0016] The beneficial effects of this invention are as follows: In this invention, the upper stamping die is composed of multiple upper die strips of different lengths spliced ​​together. The upper die strips of different sizes and lengths are selected for splicing according to the size and stamping shape of the metal veneer to be processed; the lower stamping die is composed of multiple lower die strips of different lengths spliced ​​together; the multiple upper die strips and multiple lower die strips are fixed by a fixing device; The traditional monolithic mold surface is decomposed into a series of standardized upper and lower mold strips, each of which can be machined individually. These individual upper and lower mold strips are assembled like "building blocks" using a fixing device to form a complete mold with the required shape. When the metal panel needs to be changed, the upper and lower stamping dies only need to be dismantled using the fixing device, and all the individual upper and lower mold strips can be rearranged and recombined to quickly reconstruct a mold suitable for the new metal panel. The fixing structure on the fixing device can also be completely reused. This modular and assembly-based design concept is expected to significantly shorten mold preparation time and greatly reduce development and manufacturing costs. It is particularly suitable for stamping metal single plates of different shapes and sizes, and for small-batch production of multiple models. It has extremely high economic value and promising prospects for promotion. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a spliced ​​metal curved plate stamping die according to the present invention.

[0018] Figure 2 This is a top view of the upper stamping die of a splicing metal curved plate stamping die according to the present invention.

[0019] Figure 3 This is a top view of the first fixed workpiece of a splicing metal curved plate stamping die according to the present invention.

[0020] Figure 4 This is a schematic diagram of the structure of the first fixed workpiece of a spliced ​​metal curved plate stamping die according to the present invention.

[0021] Figure 5 This is a front view of the third fixed workpiece of a splicing metal curved plate stamping die according to the present invention.

[0022] Figure 6 This is a front view of the third fixed workpiece of a splicing metal curved plate stamping die according to the present invention.

[0023] Figure 7 This invention relates to a splicing metal curved plate stamping die. Figure 2 A schematic diagram of the local structure at point A in the middle.

[0024] Figure 8 This is a side view of the first connecting plate of a splicing metal curved plate stamping die according to the present invention.

[0025] Figure 9 This is a side view of the upper stamping die of a splicing metal curved plate stamping die according to the present invention.

[0026] Figure 10 This is a front view of the upper stamping die and mounting structure of a splicing metal curved plate stamping die according to the present invention.

[0027] Figure 11 This is a schematic diagram of the installation structure of a splicing metal curved plate stamping die according to the present invention.

[0028] The numbers in the diagram are: 1. Upper stamping die; 101. Upper die strip; 2. Lower stamping die; 201. Lower die strip; 3. First fixed workpiece; 301. First upper crossbar; 302. First connecting plate; 3021. Oblong hole; 303. Second connecting plate; 304. First lower crossbar; 305. First nut; 4. Second fixed workpiece; 5. Third fixed workpiece; 501. Second upper crossbar; 502. Third connecting plate; 503. Fourth connecting plate; 504. Second lower crossbar; 6. Fourth fixed workpiece; 7. First screw; 8. First pressing plate; 9. Second screw; 10. Second pressing plate; 11. Connecting structure; 111. First fixing plate; 112. Second fixing plate; 113. Third screw; 114. Second nut; 12. Mounting structure; 121. Mounting component; 122. Threaded sleeve; 123. Fourth screw; 124. Rubber disc. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0030] Example: As attached Figure 1 To be continued Figure 11 As shown: A splicing metal curved plate stamping die includes an upper stamping die 1 and a lower stamping die 2. The upper stamping die 1 includes an upper die strip 101, and there are multiple upper die strips 101. Multiple upper die strips 101 are placed horizontally at equal intervals to form the upper stamping die 1. The lower stamping die 2 includes a lower die strip 201, and there are multiple lower die strips 201. Multiple lower die strips 201 are placed horizontally at equal intervals to form the lower stamping die 2. The outer walls of both the upper stamping die 1 and the lower stamping die 2 are fixedly fitted with fixing devices; The fixing device includes a first fixing workpiece 3, which is located on the front of the upper stamping die 1. A second fixing workpiece 4 is provided on one side of the upper stamping die 1. Both ends of the first fixing workpiece 3 are provided with connecting structures 11. One end of the first fixing workpiece 3 is fixedly connected to the second fixing workpiece 4 through the connecting structures 11. A third fixing workpiece 5 is provided on the other side of the upper stamping die 1. The other end of the first fixing workpiece 3 is fixedly connected to the third fixing workpiece 5 through the connecting structures 11. A fourth fixing workpiece 6 is provided on the back of the upper stamping die 1. One end of the fourth fixing workpiece 6 is fixedly connected to the other end of the third fixing workpiece 5 through the connecting structures 11. The other end of the fourth fixing workpiece 6 is fixedly connected to the other end of the second fixing workpiece 4 through the connecting structures 11. The first fixing workpiece 3 and the second fixing workpiece 4 have the same structure. The third fixing workpiece 5 and the fourth fixing workpiece 6 have the same structure.

[0031] In the above technical solution, the upper stamping die 1 is assembled from multiple upper die strips 101 of different lengths. The upper die strips 101 of different lengths are selected for assembly according to the size and stamping shape of the metal single plate to be processed. The lower stamping die 2 is installed in the same way, and the lower stamping die 2 is assembled from multiple lower die strips 201 of different lengths. Multiple upper die strips 101 and multiple lower die strips 201 are fixed by a fixing device to form an upper stamping die 1 and a lower stamping die 2.

[0032] In the above technical solution, a first extrusion plate 8 is placed on the side close to the first fixed workpiece 3. The first extrusion plate 8 is located between the first fixed workpiece 3 and the upper stamping die 1. The first screw 7 is connected to the first nut 305 in sequence. The first screw 7 is tightened in sequence. The first screw 7 pushes the first extrusion plate 8 to contact the upper stamping die 1. The rear side of the upper stamping die 1 contacts the fourth fixed workpiece 6, thereby completing the fixation of the front and rear sides of the upper stamping die 1. A second extrusion plate 10 is placed on the side close to the second fixed workpiece 4. The second extrusion plate 10 is located between the second fixed workpiece 4 and the upper stamping die 1. The second screw 9 is connected to the second fixed workpiece 4 by thread in sequence. The second screw 9 is tightened in sequence. The second screw 9 pushes the second extrusion plate 10 to contact the upper stamping die 1. The rear side of the upper stamping die 1 contacts the third fixed workpiece 5, thereby completing the fixation of the left and right sides of the upper stamping die 1.

[0033] The third fixed workpiece 5 includes a second upper horizontal bar 501. One end of the second upper horizontal bar 501 is fixedly connected to a third connecting plate 502, and the other end of the second upper horizontal bar 501 is fixedly connected to a fourth connecting plate 503. A second lower horizontal bar 504 is fixedly connected to the outer wall of the third connecting plate 502. There is a gap between the second upper horizontal bar 501 and the second lower horizontal bar 504. The other end of the second lower horizontal bar 504 is fixedly connected to the outer wall of the fourth connecting plate 503. One side of the first connecting plate 302 extends outward, and an elongated hole 3021 is provided at the extended end of the first connecting plate 302. The first connecting plate 302 contacts the second upper horizontal bar 501 and the second lower horizontal bar 504. The elongated hole 3021 is located between the second upper horizontal bar 501 and the second lower horizontal bar 504. The first connecting plate 302 and the third fixed workpiece 5 are fixedly connected by a connecting structure 11. The structure 11 includes a first fixing plate 111, a second fixing plate 112, and a third screw 113. The first fixing plate 111 is located outside the first connecting plate 302, and the second fixing plate 112 is located outside the second upper horizontal bar 501 and the third connecting plate 502. The outer walls of the first fixing plate 111 and the second fixing plate 112 are provided with through holes. The third screw 113 passes through the through hole of the first fixing plate 111, the oblong hole 3021, the gap between the second upper horizontal bar 501 and the second lower horizontal bar 504, and the through hole of the second fixing plate 112 in sequence. The outer wall of the third screw 113 is threaded with a second nut 114. The first fixing plate 111, the second fixing plate 112, the third screw 113, and the second nut 114 are all in two sets, and the two sets of the first fixing plate 111, the second fixing plate 112, the third screw 113, and the second nut 114 are arranged at equal intervals.

[0034] In the above technical solution, the first fixed workpiece 3, the second fixed workpiece 4, the third fixed workpiece 5, and the fourth fixed workpiece 6 are sequentially sleeved on the outer side wall of the upper stamping die 1. The first fixed plate 111 is placed on the outside of the first connecting plate 302, and the second fixed plate 112 is placed on the outside of the second upper horizontal bar 501 and the third connecting plate 502. The third screw 113 passes through the through hole of the first fixed plate 111, the oblong hole 3021, the gap between the second upper horizontal bar 501 and the second lower horizontal bar 504, and the through hole of the second fixed plate 112 in sequence. The outer wall of the third screw 113 is threaded to the second nut 114, and the second fixed plate 112 and the first fixed plate 111 are fixed by the second nut 114. That is, the first fixed workpiece 3, the second fixed workpiece 4, the third fixed workpiece 5, and the fourth fixed workpiece 6 are fixed in sequence by the connecting structure 11.

[0035] Both the first fixed workpiece 3 and the fourth fixed workpiece 6 are provided with mounting structures 12. There are multiple mounting structures 12, which are arranged at equal intervals. Each mounting structure 12 includes a mounting part 121. The bottom of the mounting part 121 is inserted between the first upper horizontal bar 301 and the first lower horizontal bar 304. The top of the mounting part 121 is fixedly connected to a threaded sleeve 122. The threaded sleeve 122 is internally threaded with a fourth screw 123. The bottom of the fourth screw 123 is fixedly connected to a rubber disc 124.

[0036] In the above technical solution, when installing and using the upper stamping die 1 and the lower stamping die 2, the lower stamping die 2 is placed on the lower surface of the stamping machine, the upper stamping die 1 is placed on the movable end of the stamping machine, the bottom of the mounting part 121 is inserted between the first upper horizontal bar 301 and the first lower horizontal bar 304, the internal thread of the threaded sleeve 122 is connected to the fourth screw 123, and the rubber disc 124 at the bottom of the fourth screw 123 contacts the outer wall of the movable end of the stamping machine, thereby fixing and installing the upper stamping die 1.

[0037] The specific usage and function of this embodiment are as follows: When using this invention, the upper stamping die 1 is composed of multiple upper die strips 101 of different lengths spliced ​​together. Different sizes and lengths of upper die strips 101 are selected for splicing according to the size and stamping shape of the metal single plate to be processed. The first fixed workpiece 3, the second fixed workpiece 4, the third fixed workpiece 5, and the fourth fixed workpiece 6 are sequentially sleeved onto the outer side wall of the upper stamping die 1. The first fixed plate 111 is placed on the outside of the first connecting plate 302, and the second fixed plate 112 is placed on the outside of the second upper horizontal bar 501 and the third connecting plate 502. The third screw 113 passes through the through hole of the first fixed plate 111, the oblong hole 3021, the gap between the second upper horizontal bar 501 and the second lower horizontal bar 504, and the through hole of the second fixed plate 112 in sequence. The outer wall of the third screw 113 is threaded to the second nut 114. The second fixed plate 112 and the first fixed plate 111 are fixed by the second nut 114. That is, the first fixed workpiece 3, the second fixed workpiece 4, the third fixed workpiece 5, and the fourth fixed workpiece 6 are fixed in sequence by the connecting structure 11, and a certain distance is reserved between the first fixed workpiece 3 and the second fixed workpiece 4 and the upper stamping die 1. A first extrusion plate 8 is placed on the side close to the first fixed workpiece 3. The first extrusion plate 8 is located between the first fixed workpiece 3 and the upper stamping die 1. The first screw 7 is connected to the first nut 305 in sequence. The first screw 7 is tightened in sequence. The first screw 7 pushes the first extrusion plate 8 to contact the upper stamping die 1. The rear side of the upper stamping die 1 contacts the fourth fixed workpiece 6, thereby completing the fixation of the front and rear sides of the upper stamping die 1. A second extrusion plate 10 is placed on the side close to the second fixed workpiece 4. The second extrusion plate 10 is located between the second fixed workpiece 4 and the upper stamping die 1. The second screw 9 is connected to the second fixed workpiece 4 in sequence by thread. The second screw 9 is tightened in sequence. The second screw 9 pushes the second extrusion plate 10 to contact the upper stamping die 1. The rear side of the upper stamping die 1 contacts the third fixed workpiece 5, thereby completing the fixation of the left and right sides of the upper stamping die 1. The installation of the lower stamping die 2 is similar. The lower stamping die 2 is composed of multiple lower die strips 201 of different lengths spliced ​​together. Please refer to the above structure and process. Figure 1-9 .

[0038] When installing and using the upper stamping die 1 and the lower stamping die 2, the lower stamping die 2 is placed on the lower surface of the stamping machine, and the upper stamping die 1 is placed on the movable end of the stamping machine. The bottom of the mounting part 121 is inserted between the first upper crossbar 301 and the first lower crossbar 304. The internal thread of the threaded sleeve 122 is connected to the fourth screw 123. The rubber disc 124 at the bottom of the fourth screw 123 contacts the outer wall of the movable end of the stamping machine, thereby fixing the upper stamping die 1 in place.

[0039] Please refer to the above structure and process. Figure 1 and Figure 10-11 .

[0040] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A splicing metal curved plate stamping die, comprising an upper stamping die (1) and a lower stamping die (2), characterized in that, The upper stamping die (1) includes an upper die strip (101), and there are multiple upper die strips (101). The multiple upper die strips (101) are placed horizontally at equal intervals to form the upper stamping die (1). The lower stamping die (2) includes a lower die strip (201), and there are multiple lower die strips (201). The multiple lower die strips (201) are placed horizontally at equal intervals to form the lower stamping die (2). The outer walls of the upper stamping die (1) and the lower stamping die (2) are both fixedly sleeved with fixing devices; The fixing device includes a first fixing workpiece (3), which is located on the front of the upper stamping die (1). A second fixing workpiece (4) is provided on one side of the upper stamping die (1). Both ends of the first fixing workpiece (3) are provided with connecting structures (11). One end of the first fixing workpiece (3) is fixedly connected to the second fixing workpiece (4) through the connecting structure (11). A third fixing workpiece (5) is provided on the other side of the upper stamping die (1). The other end of the first fixing workpiece (3) is fixedly connected to the third fixing workpiece (5) through the connecting structure (11). A fourth fixing workpiece (6) is provided on the back of the upper stamping die (1). One end of the fourth fixing workpiece (6) is fixedly connected to the other end of the third fixing workpiece (5) through the connecting structure (11). The other end of the fourth fixing workpiece (6) is fixedly connected to the other end of the second fixing workpiece (4) through the connecting structure (11). The first fixing workpiece (3) and the second fixing workpiece (4) have the same structure. The third fixing workpiece (5) and the fourth fixing workpiece (6) have the same structure.

2. The splicing metal curved plate stamping die according to claim 1, characterized in that, The first fixed workpiece (3) includes a first upper horizontal bar (301), one end of the first upper horizontal bar (301) is fixedly connected to a first connecting plate (302), the other end of the first upper horizontal bar (301) is fixedly connected to a second connecting plate (303), the outer wall of the first connecting plate (302) is fixedly connected to a first lower horizontal bar (304), a first nut (305) is fixedly connected between the first upper horizontal bar (301) and the first lower horizontal bar (304), and the other end of the first lower horizontal bar (304) is fixedly connected to the outer wall of the second connecting plate (303); The first nut (305) is threaded with a first screw (7), and a first extrusion plate (8) is provided at one end of the first screw (7) near the upper stamping die (1). The first extrusion plate (8) is in contact with the outer wall of the upper stamping die (1), and the first screw (7) is in contact with the first extrusion plate (8).

3. The splicing metal curved plate stamping die according to claim 2, characterized in that, There are multiple first nuts (305) and first screws (7), and the multiple first nuts (305) are arranged at equal intervals along the horizontal direction of the first upper horizontal bar (301).

4. The splicing metal curved plate stamping die according to claim 3, characterized in that, The second fixed workpiece (4) is threaded with a second screw (9). A second extrusion plate (10) is provided at one end of the second screw (9) near the upper stamping die (1). The second extrusion plate (10) is in contact with the outer wall of the upper stamping die (1). The second extrusion plate (10) is in contact with the second screw (9). There are multiple second screws (9). The multiple second screws (9) are arranged at equal intervals along the horizontal direction of the second fixed workpiece (4).

5. A splicing metal curved plate stamping die according to claim 2, characterized in that, The third fixed workpiece (5) includes a second upper horizontal bar (501), one end of which is fixedly connected to a third connecting plate (502), and the other end of which is fixedly connected to a fourth connecting plate (503). The outer wall of the third connecting plate (502) is fixedly connected to a second lower horizontal bar (504). There is a gap between the second upper horizontal bar (501) and the second lower horizontal bar (504), and the other end of the second lower horizontal bar (504) is fixedly connected to the outer wall of the fourth connecting plate (503).

6. The splicing metal curved plate stamping die according to claim 5, characterized in that, One side of the first connecting plate (302) extends outward, and an elongated hole (3021) is provided at the extended end of the first connecting plate (302). The first connecting plate (302) is in contact with the second upper horizontal bar (501) and the second lower horizontal bar (504). The elongated hole (3021) is located between the second upper horizontal bar (501) and the second lower horizontal bar (504). The first connecting plate (302) is fixedly connected to the third fixed workpiece (5) through the connecting structure (11).

7. A splicing metal curved plate stamping die according to claim 6, characterized in that, The connecting structure (11) includes a first fixing plate (111), a second fixing plate (112), and a third screw (113). The first fixing plate (111) is located outside the first connecting plate (302), and the second fixing plate (112) is located outside the second upper horizontal bar (501) and the third connecting plate (502). The outer walls of the first fixing plate (111) and the second fixing plate (112) are provided with through holes. The third screw (113) passes through the through hole of the first fixing plate (111), the elongated hole (3021), the gap between the second upper horizontal bar (501) and the second lower horizontal bar (504), and the through hole of the second fixing plate (112) in sequence. The outer wall of the third screw (113) is threaded with a second nut (114).

8. A splicing metal curved plate stamping die according to claim 7, characterized in that, The first fixing plate (111), the second fixing plate (112), the third screw (113), and the second nut (114) are all in two sets, and the first fixing plate (111), the second fixing plate (112), the third screw (113), and the second nut (114) in the two sets are arranged at equal intervals.

9. A splicing metal curved plate stamping die according to claim 2, characterized in that, Both the first fixed workpiece (3) and the fourth fixed workpiece (6) are provided with an installation structure (12), and there are multiple installation structures (12), which are arranged at equal intervals.

10. A spliced ​​metal curved plate stamping die according to claim 9, characterized in that, The mounting structure (12) includes a mounting component (121), the bottom of which is inserted between the first upper horizontal bar (301) and the first lower horizontal bar (304). A threaded sleeve (122) is fixedly connected to the top of the mounting component (121), and a fourth screw (123) is threadedly connected to the inside of the threaded sleeve (122). A rubber disc (124) is fixedly connected to the bottom of the fourth screw (123).

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