A multi-station combined die

Abstract

The utility model provides a kind of multi-station combined die, it is related to cold stamping die, comprising: lower die holder, upper die holder, first process die, second process die, third process die, fourth process die and fifth process die, product blank is drawn by first process die;The workpiece circle waste material of drawing is cut off and separated by second process die, the workpiece side after waste material cutting is flanged, the other side is partially cut off and separated, and the workpiece top after waste material cutting is punched by third process die;The workpiece other side is flanged by fourth process die;The two sides of workpiece are punched by fifth process die.The utility model has the beneficial effect: five processes are machined simultaneously, and multiple processes such as drawing, trimming, shaping punching are scientifically arranged, so that all processing steps are completed in turn in a die set;The number of dies is greatly compressed, which directly reduces development cost and manufacturing cycle.

Description

Technical Field

[0001] This utility model relates to the field of cold stamping die technology, and in particular to a multi-station combination die. Background Technology

[0002] The global automotive industry is facing increasingly fierce competition, with major automakers prioritizing cost reduction and efficiency improvement when developing new models. In traditional metal stamping parts production, a single-process production model is prevalent. For example, a longitudinal beam in a car frame often requires three to five independent processes, necessitating three to five specialized mold-making machines and corresponding stamping presses, each requiring at least two operators. This production model leads to persistently high costs: equipment procurement and maintenance expenses continue to rise, labor costs increase significantly due to the large number of personnel needed, energy consumption intensifies with multiple machine tools operating simultaneously, and factory space is heavily occupied, driving up rent and operating costs. Therefore, the industry urgently needs breakthrough technological innovation. Utility Model Content

[0003] In view of this, in order to solve the aforementioned problems in the machining of parts such as the longitudinal beams of automobile frames, An embodiment of this utility model provides a multi-station combined mold.

[0004] An embodiment of this utility model provides a multi-station combined mold, comprising: Lower mold base; An upper mold base is positioned above the lower mold base and can move up and down; The first process mold includes a first lower mold disposed on the lower mold base and a first upper mold disposed on the upper mold base. The first lower mold includes a first punch and a pressure ring. The pressure ring is disposed around the first punch and can move up and down. The first upper mold includes a first concave mold disposed vertically opposite to the first punch. The second process mold includes a second lower mold disposed on the lower mold base and a second upper mold disposed on the upper mold base. The second lower mold includes a second punch and a plurality of scrap cutting blocks. The lower mold base is provided with a groove. The second punch is disposed in the middle of the groove. Each of the scrap cutting blocks is disposed around the second punch. The second upper mold includes a second pressure plate. The edge of the second pressure plate is provided with a second trimming cutting block. The third process mold includes a third lower mold disposed on the lower mold base and a third upper mold disposed on the upper mold base. The third lower mold includes a third punch, and the third punch is provided with a plurality of third die sleeves. The third upper mold includes a third pressure plate and a third flanging cutter block. The third flanging cutter blocks are spaced apart on one side of the third pressure plate. The edge of the third pressure plate opposite to the third flanging cutter block is provided with a third trimming cutter block. The third pressure plate is provided with a plurality of third punches, and the third punches and the third die sleeves are arranged vertically opposite each other. The fourth process mold includes a fourth lower mold disposed on the lower mold base and a fourth upper mold disposed on the upper mold base. The fourth lower mold includes a fourth punch, and the fourth upper mold includes a fourth pressure plate and a fourth flanging cutter block. The fourth flanging cutter block is spaced apart on one side of the fourth pressure plate.

[0005] Furthermore, it also includes a fifth process mold, which includes a fifth lower mold disposed on the lower mold base and a fifth upper mold disposed on the upper mold base. The fifth lower mold includes a fifth punch and multiple wedge actuators. Multiple fifth die sleeves are respectively provided on both sides of the fifth punch. Each wedge actuator is respectively disposed on both sides of the fifth punch. The fifth upper mold includes a fifth pressure plate, multiple wedge mounting seats and multiple fifth punches. The multiple wedge mounting seats are respectively disposed on both sides of the fifth pressure plate. Each wedge mounting seat is connected to a fifth punch at one end near the fifth pressure plate. The wedge mounting seats and the wedge actuators are arranged vertically opposite each other.

[0006] Furthermore, the first process mold, the second process mold, the third process mold, the fourth process mold, and the fifth process mold are arranged sequentially along a straight line.

[0007] Furthermore, a fifth waste groove is provided on the lower die holder outside the fifth concave die sleeve, a third waste groove is provided on one side of the third punch on the lower die holder, and a second waste groove is formed on both sides of the second punch in the groove.

[0008] Furthermore, the upper mold base is provided with fifth limiting pressure plates at both ends of the fifth pressure plate.

[0009] Furthermore, the lower die base is provided with a plurality of balancing ejector rods located around the fifth punch, and the upper die base is provided with a plurality of balancing blocks located around the fifth pressure plate, with the balancing blocks and the balancing ejector rods arranged opposite each other.

[0010] Furthermore, the bottom of the pressure ring is connected to the lower cylinder top rod, and the periphery of the pressure ring is provided with a plurality of first limiting pressure plates spaced apart.

[0011] Furthermore, the first punch is provided with a plurality of first positioning plates on its periphery, and the groove is provided with a plurality of second positioning plates on its periphery above the second punch.

[0012] Furthermore, a limiter is provided on the outer side of one end of the fourth punch.

[0013] Furthermore, the upper mold base is provided with end guide plates at both ends, the lower mold base is provided with end guide surfaces at both ends, the end guide plates are provided with multiple end guide sleeves, the end guide surfaces are provided with multiple end guide posts, the end guide sleeves and the end guide posts are arranged one above the other, and the lower mold base is also provided with nitrogen springs.

[0014] The beneficial effects of the technical solution provided by the embodiments of this utility model are as follows: 1. This utility model discloses a multi-station combined mold. The first-stage mold draws the product blank; the second-stage mold removes and separates the waste material around the drawn part; the third-stage mold flanging one side of the part after waste removal and partially removing and separating waste material on the other side, and punching holes at the top of the part after waste removal; the fourth-stage mold flanging the other side of the part; and the fifth-stage mold punching holes on both sides of the part. By moving the mold down one step at a time, five processing steps can be completed simultaneously. The multiple processes, including drawing, trimming, shaping, and punching, are scientifically arranged. Utilizing the hierarchical structure or sliding mechanism of the combined mold, all processing steps are completed sequentially within a single mold. This significantly reduces the number of molds, directly lowering development costs and manufacturing cycles, while also reducing indirect costs associated with mold storage and maintenance.

[0015] 2. The multi-station combined mold of this utility model can complete the processing of five processes at the same time. The production process is transformed from the serial operation of multiple stamping equipment to the integrated production of a single equipment, and the mold manufacturing cycle, production energy consumption and depreciation costs are significantly reduced.

[0016] 3. The multi-station combination mold of this utility model simplifies operation, reduces the need for operators as the number of molds is reduced, effectively controls labor costs, and completely eliminates the cross-equipment transfer links in traditional production by process integration, freeing up a lot of space and improving overall production efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the upper mold base of a multi-station combined mold according to this utility model; Figure 2 This is a perspective view of the upper mold base of a multi-station combined mold according to this utility model; Figure 3 This is a schematic diagram of the lower mold base of a multi-station combined mold according to this utility model; Figure 4 This is a perspective view of the lower mold base of a multi-station combined mold according to this utility model; Figure 5 This is a schematic diagram showing the products from the first to the third process. Figure 6 This is a schematic diagram of the product from the fourth process.

[0018] In the diagram: 1. Upper die base; 2. Lower die base; 3. First die cavity; 4. Second pressure plate; 5. Second trimming cutter block; 6. Third trimming cutter block; 7. Third pressure plate; 8. Third punch; 9. Third flanging cutter block; 10. Third limiting pressure plate; 11. Fourth flanging cutter block; 12. Fourth pressure plate; 13. Fourth limiting pressure plate; 14. Wedge mounting base; 15. Fifth limiting pressure plate; 16. Fifth pressure plate; 17. Fifth punch; 18. Balance block; 19. End guide plate; 20. End guide sleeve; 21. Blank holder ring; 22. First punch; 23. First positioning plate; 24. First limiting pressure plate; 25. Second punch; 26. Second scrap cutter block; 27. Second positioning plate; 28. Second scrap groove; 29. ​​Third punch; 30. Third die sleeve; 31. Third scrap groove; 32. Limiter; 33. Fourth punch; 34. Balance ejector rod; 35. Fifth scrap groove; 36. Fifth punch; 37. Fifth die sleeve; 38. Wedge actuator; 39. End guide post; 40. Nitrogen spring; 41. End guide surface; 100. First process product; 200. Second process product; 300. Third process product; 400. Fourth process product; 500. Longitudinal beam. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be further described below with reference to the accompanying drawings. The following description presents a preferred embodiment of several possible embodiments of this utility model, intended to provide a basic understanding of the utility model, but not intended to identify the key or decisive elements of the utility model or to limit the scope of protection sought.

[0020] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0021] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures. Also, it should be understood that, for ease of description, the dimensions of the various parts shown in the figures are not drawn to actual scale.

[0023] In the description of this utility model, it should be noted that the circuits, electronic components and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated. The content protected by this utility model does not involve any improvement to the internal structure and method.

[0024] It should be further noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Please refer to Figure 1-4 The present invention provides a multi-station combined mold for processing longitudinal beams of automobile frames, which mainly includes a lower mold base 2, an upper mold base 1, a first process mold, a second process mold, a third process mold, and a fourth process mold.

[0026] The upper mold base 1 is positioned above the lower mold base 2 and can move up and down. The lower mold base 2 is generally fixedly mounted on a machine tool, and the upper mold base 1 is mounted on the machine tool and positioned vertically opposite to the lower mold base 2. The machine tool can drive the upper mold base 1 to move up and down, so that the upper mold base 1 and the lower mold base 2 can be closed or separated.

[0027] like Figure 2 and 4As shown, in some embodiments, the upper mold base 1 has end guide plates 19 at both ends, and the lower mold base 2 has end guide surfaces 41 at both ends. The end guide plates 19 have multiple end guide sleeves 20, and the end guide surfaces 41 have multiple end guide posts 39. The end guide sleeves 20 and the end guide posts 39 are arranged vertically opposite each other. The lower mold base 2 also has a nitrogen spring 40. The shape of the end guide plates 19 is adapted to the shape of the end guide surfaces 41 so that when the upper mold base 1 moves downward, the end guide plates 19 can be inserted precisely into the end guide surfaces 41, and can move vertically downward along the end guide surfaces 41 with good guiding effect. For example, the end guide plates 19 are cuboid in shape, and the end guide surfaces 41 are rectangular grooves. The nitrogen springs 40 are respectively disposed at both ends of the lower mold base 2, so that when the upper mold base 1 moves down to a predetermined position, it contacts the nitrogen springs 40 and can press down the nitrogen springs 40 to continue moving down.

[0028] The first process mold includes a first lower mold disposed on the lower mold base 2 and a first upper mold disposed on the upper mold base 1. The first lower mold includes a first punch 22 and a pressure ring 21. The pressure ring 21 is disposed around the first punch 22 and can move up and down. The first upper mold includes a first concave mold 3 disposed vertically opposite to the first punch 22.

[0029] The pressure ring 21 is approximately rectangular and surrounds the first punch 22. The bottom of the pressure ring 21 is connected to a lower cylinder push rod. Under the lifting action of the lower cylinder push rod, the pressure ring 21 can rise to a height higher than the highest point of the first punch 22, so that the blank to be processed can be placed on the pressure ring 21.

[0030] To address the issue of accurate blank positioning, the outer periphery of the first punch 22 is provided with multiple first positioning plates 23. Each first positioning plate 23 positions the blank circumferentially, ensuring that the blank is accurately positioned on the first punch 22 and in the correct drawing position.

[0031] In some embodiments, the periphery of the pressure ring 21 is provided with a plurality of spaced-apart first limiting pressure plates 24. For example... Figure 2 As shown in the example, there are four first limiting pressure plates 24. The four first limiting pressure plates 24 are respectively disposed at the four corners of the pressure ring 21. The four first limiting pressure plates 24 limit the downward upper mold base 1 and restrict the lowest stroke of the upper mold base 1.

[0032] The second process mold includes a second lower mold disposed on the lower mold base 2 and a second upper mold disposed on the upper mold base 1. The second lower mold includes a second punch 25 and a plurality of scrap cutting blocks. The lower mold base 2 has a groove, and the second punch 25 is disposed in the middle of the groove. Each of the scrap cutting blocks is disposed around the second punch 25. The second upper mold includes a second pressure plate 4, and the edge of the second pressure plate 4 is provided with a second trimming cutting block 5. The groove is rectangular in shape and recessed relative to the upper surface of the lower mold base 2. The second punch 25 is disposed in the middle of the groove, and one end of each scrap cutting block is fixed to the side wall of the groove, and the other end extends to the second punch 25. When the upper mold base 1 moves downward, the second trimming cutting block 5 moves downward to be supported on each of the scrap cutting blocks, cutting off multiple positions of the workpiece.

[0033] Considering the positioning of the workpiece to be processed on the second punch 25, a plurality of second positioning plates 27 are provided above the groove on the periphery of the second punch 25. One end of the second positioning plate 27 is fixed to the edge of the groove, and the other end extends to the second punch 25 to position the workpiece placed on the second punch 25.

[0034] In order to discharge the waste material cut off from the edge of the second punch 25, a second waste material groove 28 is formed on both sides of the second punch 25 in the groove. The bottom surface of the two second waste material grooves 28 is an inclined surface with a high center and low ends, so that the cut waste material can be automatically discharged.

[0035] The third process mold includes a third lower mold mounted on the lower mold base 2 and a third upper mold mounted on the upper mold base 1. The third lower mold includes a third punch 29 with multiple third die sleeves 30. The third upper mold includes a third pressure plate 7 and third flanging cutters 9. The third flanging cutters 9 are spaced apart on one side of the third pressure plate 7. The edge of the third pressure plate 7 opposite to the third flanging cutters 9 is provided with third trimming cutters 6. The third pressure plate 7 has multiple third punches 8, which are arranged vertically opposite to the third die sleeves 30. When the upper mold base 1 moves downward, each third punch 8 cooperates with one third die sleeve 30 to punch multiple slots on the top of the workpiece. The number and position of the third punches 8 and the third die sleeves 30 can be flexibly set according to the slot distribution of the workpiece to be processed. Furthermore, the third trimming blade 6 partially cuts off one side of the workpiece to be processed, removing edge waste; the third flanging blade 9 presses down on the other side of the workpiece to be processed, causing the other side of the workpiece to be processed to form a flanged edge.

[0036] Furthermore, in some embodiments, in order to discharge the waste material cut off from the edge of the second punch 25, a third waste material groove 31 is provided on one side of the third punch 29 on the lower die base 2, that is, a third waste material groove 31 is provided at the corresponding position of each of the third trimming cutters, so as to discharge the cut waste material in a timely manner.

[0037] In some embodiments, a plurality of third limiting pressure plates 10 are provided around the third flanging blade block 9 and the trimming blade block. When the upper mold base 1 moves downward, and the third upper mold and the third lower mold are closed, the third limiting pressure plates 10 abut against the lower mold base 2 to achieve accurate mold closing.

[0038] The fourth process mold includes a fourth lower mold mounted on the lower mold base 2 and a fourth upper mold mounted on the upper mold base 1. The fourth lower mold includes a fourth punch 33, and the fourth upper mold includes a fourth pressure plate 12 and a fourth flanging blade 11. The fourth flanging blade 11 is spaced apart on one side of the fourth pressure plate 12. When the upper mold base 1 moves downward, the fourth flanging blade 11 presses down on one side of the workpiece to be processed to form a flang. In this way, the third flanging blade 9 and the fourth flanging blade 11 respectively process the flanging on both sides of the workpiece to be processed.

[0039] like Figure 4 As shown, a limiter 32 is provided on the outer side of one end of the fourth punch 33. When the upper die base 1 moves downward, and the fourth upper die and the fourth lower die are closed, the limiter 32 limits the end of the fourth pressure plate 12. Furthermore, in some embodiments, multiple fourth limiting pressure plates 13 are provided around the fourth pressure plate. When the upper die base 1 moves downward, and the fourth upper die and the fourth lower die are closed, the fourth limiting pressure plates 13 abut against the lower die base 2 to achieve accurate mold closing.

[0040] Furthermore, considering that a slot is provided on one side of the longitudinal beam 500, the multi-station combined mold of this utility model includes a fifth process mold. The first process mold, the second process mold, the third process mold, the fourth process mold and the fifth process mold are arranged sequentially along a straight line. This structure is compact and can save a lot of space.

[0041] The five-process mold includes a fifth lower mold disposed on the lower mold base 2 and a fifth upper mold disposed on the upper mold base 1. The fifth lower mold includes a fifth punch 36 and a plurality of wedge actuators 38. A plurality of fifth die sleeves 37 are respectively provided on both sides of the fifth punch 36. Each wedge actuator 38 is respectively disposed on both sides of the fifth punch 36. The fifth upper mold includes a fifth pressure plate 16, a plurality of wedge mounting seats 14 and a plurality of fifth punches 17. The plurality of wedge mounting seats 14 are respectively disposed on both sides of the fifth pressure plate 16. Each wedge mounting seat 14 is connected to a fifth punch 17 at one end near the fifth pressure plate. The wedge mounting seats 14 and the wedge actuators 38 are arranged vertically opposite each other. When the upper die holder 1 moves downward, the wedge mounting base 14 moves downward and contacts the wedge driver 38. The wedge mounting base 14 is driven by the wedge driver 38 to move toward the fifth punch 36, causing each fifth die sleeve 37 to engage with a punch hole, thus machining multiple slots on both sides of the workpiece to be processed.

[0042] The upper mold base 1 is provided with fifth limiting pressure plates 15 at both ends of the fifth pressure plate 16. When the upper mold base 1 moves downward, the fifth upper mold and the fifth lower mold are closed, and the fifth limiting pressure plate 15 abuts against the lower mold base 2 to achieve accurate mold closing.

[0043] In order to discharge the waste generated by punching on both sides of the workpiece in a timely manner, in some embodiments, a fifth waste groove 35 is provided on the lower die base 2 on the outside of the fifth die sleeve 37. The bottom surface of the fifth waste groove 35 is inclined so as to automatically discharge the waste generated by punching.

[0044] In some embodiments, the lower die base 2 is provided with a plurality of balancing ejector rods 34 located around the fifth punch 36, and the upper die base 1 is provided with a plurality of balancing blocks 18 located around the fifth pressure plate 16. The balancing blocks 18 and the balancing ejector rods 34 are arranged opposite to each other. When the pressure ring 21 is lifted by the lower cylinder ejector rod, the balancing ejector rods 34 are lifted. When the edge of the first die 3 contacts the pressure ring 21, the balancing blocks 18 contact the balancing ejector rods 34, thereby stabilizing the downward movement of the upper die base 1.

[0045] like Figure 5 and 6 As shown, the machining of the automotive longitudinal beam 500 consists of five processes, from the first to the fifth. This utility model provides a multi-station combined mold machining process as follows: Figure 6 The process of the automotive longitudinal beam 500 shown is as follows: First step: The machine tool drives the upper die holder 1 to move upward and separate from the lower die holder 2. The pressure ring 21 rises higher than the first punch 22, and at the same time, the balance ejector rod 34 rises synchronously to the same height as the pressure ring 21. The worker places the blank on the pressure ring 21. After precise positioning by the first positioning plate 23, the machine tool drives the upper die base 1 to move downward. The edge of the first die 3 contacts the pressure ring 21. The upper die base 1 continues to move downward so that the first die 3 presses down on the blank to contact the first punch 22. The first die 3 and the first punch 22 cooperate to extrude the blank to complete the drawing. The machine tool drives the upper die base 1 to move upward and separate from the lower die base 2, and the first process product 100 is taken out.

[0046] Second process: The product 100 from the first process is placed on the second punch 25 and precisely positioned by the second positioning plate 27. The machine tool drives the upper mold base 1 to move downward. The second pressure plate 4 first presses down on the top of the product 100 from the first process. The upper mold base 1 continues to move downward. The second trimming blade 5 moves downward until it is supported on each of the second waste blades 26. The second trimming blade 5 contacts the second punch 25 and cuts off the waste around the product 100 from the first process along the edge of the second punch 25 to obtain the product 200 from the second process.

[0047] The third process: The product 200 from the second process is placed on the third punch 29. The machine tool drives the upper die base 1 to move downwards. The third flanging cutter block 9 contacts one side of the product 200 from the second process and begins to flanging. The upper die base 1 continues to move downwards. The third trimming cutter block 6 contacts one side of the product 200 from the second process and cuts off the excess waste material on that side along the edge of the third punch 29. Then the upper die base 1 continues to move downwards. Each third punch 8 punches holes in the top of the product 200 from the second process to form multiple slots, thus obtaining the product 300 from the third process.

[0048] Fourth process: The product 300 from the third process is placed on the fourth punch 33. The machine tool drives the upper die holder 1 to move downward. The fourth pressure plate 12 first presses down on the top of the product 300 from the third process. Under the support of the nitrogen spring 40, pre-pressing is achieved. The upper die holder 1 continues to move downward. The fourth flanging cutter block 11 contacts the other side of the product 300 from the third process and begins to flanging. Then the upper die holder 1 continues to move downward until the flanging is completed, and the product 400 from the fourth process is obtained.

[0049] Fifth step: The product 400 from the fourth step is placed on the fifth punch 36 and pre-pressed under the support of the nitrogen spring 40. The machine tool drives the upper die seat 1 to move downward, and the wedge mounting seat 14 contacts the wedge driver 38. The wedge mounting seat 14 is driven to drive the fifth punch 17 to punch holes on the side of the product 400 from the fourth step, thereby obtaining the required longitudinal beam 500 product.

[0050] It should be noted that when processing the longitudinal beam 500 using a multi-station combined mold according to this utility model, the five processes from the first to the fifth process are performed simultaneously. That is, the machine tool drives the upper mold base 1 to move downwards once to complete one product: the first process product 100, the second process product 200, the third process product 300, the fourth process product 400, and the longitudinal beam 500. Then, the machine tool drives the upper mold base 1 to move upwards, where a blank can be placed in the first process mold, the first process product 100 is transferred to the second process mold, the second process product 200 is transferred to the third process mold, the third process product 300 is transferred to the fourth process mold, and the fourth process product 400 is transferred to the fifth process mold. The machine tool then drives the upper mold base 1 to move downwards again to complete the next processing. By repeating the above process, the continuous processing of the longitudinal beam 500 product can be achieved.

[0051] In this document, the directional terms such as front, back, top, and bottom are defined based on the position of the components in the accompanying drawings and their relative positions to each other, solely for the purpose of clarity and convenience in expressing the technical solution. It should be understood that these are relative concepts and can vary depending on different methods of use and placement; the use of these directional terms should not limit the scope of protection claimed in this application.

[0052] Where there is no conflict, the embodiments and features described above can be combined with each other. The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-station combination mold, characterized in that, include: Lower mold base; An upper mold base is disposed above the lower mold base and can move up and down; The first process mold includes a first lower mold disposed on the lower mold base and a first upper mold disposed on the upper mold base. The first lower mold includes a first punch and a pressure ring. The pressure ring is disposed around the first punch and can move up and down. The first upper mold includes a first concave mold disposed vertically opposite to the first punch. The second process mold includes a second lower mold disposed on the lower mold base and a second upper mold disposed on the upper mold base. The second lower mold includes a second punch and a plurality of scrap cutting blocks. The lower mold base is provided with a groove. The second punch is disposed in the middle of the groove. Each of the scrap cutting blocks is disposed around the second punch. The second upper mold includes a second pressure plate. The edge of the second pressure plate is provided with a second trimming cutting block. The third process mold includes a third lower mold disposed on the lower mold base and a third upper mold disposed on the upper mold base. The third lower mold includes a third punch, and the third punch is provided with a plurality of third die sleeves. The third upper mold includes a third pressure plate and a third flanging cutter block. The third flanging cutter blocks are spaced apart on one side of the third pressure plate. The edge of the third pressure plate opposite to the third flanging cutter block is provided with a third trimming cutter block. The third pressure plate is provided with a plurality of third punches, and the third punches and the third die sleeves are arranged vertically opposite each other. The fourth process mold includes a fourth lower mold disposed on the lower mold base and a fourth upper mold disposed on the upper mold base. The fourth lower mold includes a fourth punch, and the fourth upper mold includes a fourth pressure plate and a fourth flanging cutter block. The fourth flanging cutter block is spaced apart on one side of the fourth pressure plate.

2. The multi-station combined mold as described in claim 1, characterized in that: It also includes a fifth process mold, which includes a fifth lower mold disposed on the lower mold base and a fifth upper mold disposed on the upper mold base. The fifth lower mold includes a fifth punch and multiple wedge actuators. Multiple fifth die sleeves are respectively provided on both sides of the fifth punch. Each wedge actuator is respectively disposed on both sides of the fifth punch. The fifth upper mold includes a fifth pressure plate, multiple wedge mounting seats and multiple fifth punches. The multiple wedge mounting seats are respectively disposed on both sides of the fifth pressure plate. Each wedge mounting seat is connected to a fifth punch at one end near the fifth pressure plate. The wedge mounting seats and the wedge actuators are arranged vertically opposite each other.

3. The multi-station combined mold as described in claim 2, characterized in that: The first process mold, the second process mold, the third process mold, the fourth process mold, and the fifth process mold are arranged sequentially along a straight line.

4. A multi-station combined mold as described in claim 2, characterized in that: The lower die holder has a fifth waste groove located on the outside of the fifth concave die sleeve, and the lower die holder has a third waste groove located on one side of the third punch. The groove contains second waste grooves on both sides of the second punch.

5. A multi-station combined mold as described in claim 2, characterized in that: The upper mold base is provided with fifth limiting pressure plates at both ends of the fifth pressure plate.

6. A multi-station combined mold as described in claim 2, characterized in that: The lower die base is provided with multiple balancing ejector rods located around the fifth punch, and the upper die base is provided with multiple balancing blocks located around the fifth pressure plate. The balancing blocks and the balancing ejector rods are arranged opposite each other.

7. A multi-station combined mold as described in claim 1, characterized in that: The bottom of the pressure ring is connected to the lower cylinder top rod, and the periphery of the pressure ring is provided with a plurality of first limiting pressure plates spaced apart.

8. A multi-station combined mold as described in claim 1, characterized in that: The first punch has multiple first positioning plates around its periphery, and the groove has multiple second positioning plates above the second punch around its periphery.

9. A multi-station combined mold as described in claim 1, characterized in that: A limiter is provided on the outer side of one end of the fourth punch.

10. A multi-station combined mold as described in claim 1, characterized in that: The upper mold base has end guide plates at both ends, and the lower mold base has end guide surfaces at both ends. The end guide plates have multiple end guide sleeves, and the end guide surfaces have multiple end guide posts. The end guide sleeves and end guide posts are arranged one above the other. The lower mold base is also equipped with a nitrogen spring.

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