Flexible pre-punching die for section bar
By integrating the design of flexible pre-punching dies and controlling them with connecting rods and cylinders, the problems of large space occupation and high cost of traditional dies have been solved, enabling efficient and stable processing of openings in various shapes and improving the production efficiency and quality of automotive parts.
Patent Information
- Application Number
- CN202511370895.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-24
- Publication Date
- 2025-11-18
AI Technical Summary
Traditional punching dies occupy a large space, are costly, and are complex to manage. They are difficult to efficiently complete punching operations with various opening shapes in a limited space, which affects the production efficiency and quality of automotive parts.
The flexible pre-punching die is used, and multiple processing stations are integrated under one upper die base through integrated design. The operation of the punching tool is controlled by the connecting rod and the push cylinder to realize multiple punching and precise processing of the strip.
It significantly improves space utilization, reduces mold costs, enhances production efficiency and processing quality stability, and ensures the accuracy and consistency of punching.
Smart Images
Figure CN120961732A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of automotive parts processing, and in particular to a flexible pre-punching die for profiles. Background Technology
[0002] In the manufacturing process of automotive parts, the forming of metal strips is a crucial step. These metal strips are typically several meters long or even longer, and their processing precision and efficiency directly affect the quality and production cost of the entire automotive part.
[0003] To meet the structural requirements of workpiece forming, openings of different shapes need to be machined at different locations on the metal strip. The shape and position of these openings are crucial for subsequent bending, assembly, and other processes, therefore, their accuracy and consistency must be ensured. In traditional processing, to machine openings of different shapes at different locations on the metal strip, corresponding punching dies are usually placed at those locations. Each punching die is designed for a specific opening shape and position to ensure processing accuracy. However, this approach has some significant limitations. For example: 1. Placing multiple punching dies requires several meters of space. In a limited workshop, such space occupation leads to low workshop space utilization, limiting production scale and the flexibility of equipment layout. Each punching die needs to be designed and manufactured individually, which means high manufacturing and maintenance costs. 2. The use of multiple dies not only increases the initial investment but also increases subsequent maintenance and management costs. 3. The use of numerous dies increases the complexity of production management and the error rate.
[0004] Therefore, there is an urgent need for a new type of mold that can efficiently complete punching operations for openings of various shapes within a limited space, while reducing mold costs and improving production efficiency and quality to meet the modern needs of automotive parts manufacturing and processing. Summary of the Invention
[0005] The technical problem to be solved by this application is to provide a flexible pre-punching mold for profiles, which can realize the overall processing of long strips by integrating the processing station design and independently controlling the punching tool; it significantly improves space utilization efficiency, reduces mold cost, and improves production efficiency and processing quality stability.
[0006] The technical solution adopted in this application is as follows: a flexible pre-punching mold for profiles, including an upper mold base and a lower mold base. A base plate is provided on the lower mold base, and several processing stations are installed below the upper mold base. Each processing station includes an upper template, a top plate, and at least one punching tool. The bottom of the punching tool is a cutting edge, and the cutting edge of the punching tool passes through the top plate. The material strip to be processed is connected to a conveying device. The conveying device drives the material strip to be processed to pass between the base plate and the top plate. A movable block is fixedly connected to the upper end of the punching tool. A slot is opened on the surface of the upper template for the movable block to move up and down. There is a predetermined distance between the movable block and the upper mold base. A connecting rod is provided between the movable block and the upper mold base. The connecting rod is connected to a push cylinder. The push cylinder drives the connecting rod to move to contact and connect with or disengage from the movable block. The upper mold base presses down, driving the movable block to punch downwards through the connecting rod.
[0007] Compared with existing technologies, the advantages of this application are as follows: First, by integrating multiple processing stations under a single upper die base, the traditional method of arranging multiple independent punching dies in different locations significantly reduces the floor space occupied by the dies in the workshop. A scenario that previously required several meters of space to accommodate multiple dies can now be achieved with an integrated die device, significantly improving workshop space utilization and providing more possibilities for expanding production scale and optimizing equipment layout. A connecting rod is used to fill the gap between the movable block and the upper die base. The downward pressure of the upper die base drives the movable block downward through the connecting rod. The connecting rod is connected to a push cylinder; the operation of the push cylinder moves the connecting rod to contact or disengage from the movable block. In other words, this application controls whether the movable block and punching tool corresponding to the push cylinder are working by controlling whether the push cylinder is operational.
[0008] As the conveyor belt passes between the bottom and top plates, it moves to the corresponding processing station. The push cylinder engages, and the upper die presses down, completing the processing at that point. The belt continues moving to the next processing position and matches that station. At that station, the push cylinder engages, and the upper die presses down, completing the processing at that point. As the entire belt passes through the flexible pre-punching die of the profile, the die undergoes multiple punching operations under control. Each punching operation, depending on whether the push cylinder is engaged, drives the same or different punching tools, effectively matching the processing requirements of the belt.
[0009] Secondly, in traditional processes, each punching die needs to be designed and manufactured individually to accommodate openings of different shapes and locations, resulting in high manufacturing and maintenance costs. This application, however, reduces the overall number of dies by setting multiple processing stations on a single upper die base. Simultaneously, its structural design enhances the versatility and adjustability of the dies, reducing reliance on individual die customization. Therefore, without sacrificing processing accuracy, it effectively reduces the manufacturing and maintenance costs of the dies, thereby improving the economic benefits for enterprises.
[0010] Finally, the cutting edge of the punching tool passes through the top plate, and a movable block is fixedly connected to the upper end of the punching tool. This structural design ensures the stability of the punching tool during the punching process, thereby ensuring the accuracy and consistency of the punching operation. It reduces processing errors caused by a large number of molds and complex operations, improves the stability of product quality, and is of great significance for the smooth progress of subsequent bending, assembly, and other processes, contributing to the improvement of the overall quality level of automotive parts processing.
[0011] In some embodiments of this application, an insert is mounted on the top plate. The insert has a limiting hole through which the cutting edge of a punching tool passes. The punching tool includes a rod segment and a cutting segment, with the diameter of the rod segment being larger than the diameter of the cutting segment. The limiting hole is a stepped hole, which restricts the extreme position of the punching tool's downward stroke. Through the stepped hole limiting design on the insert, the extreme position of the punching tool's downward stroke is precisely controlled, ensuring consistent punching depth and machining accuracy, and improving product quality stability. Compared to directly creating a limiting hole on the top plate, using an insert to set the limiting hole allows for the selection of wear-resistant materials, making it more wear-resistant and easier to replace after wear.
[0012] In some embodiments of this application, the top surface of the connecting rod is in contact with the upper mold base, the connecting rod includes a head section and a tail section, the tail section of the connecting rod is connected to the output shaft of the push cylinder, and the bottom surface of the head section of the connecting rod is provided with a clearance surface; when the clearance surface of the connecting rod is located above the movable block, there is a gap between the connecting rod and the movable block.
[0013] When the clearance surface of the connecting rod is above the movable block, the connecting rod cannot fill the gap between the movable block and the upper die holder. In this case, the upper die holder cannot transmit power to the movable block when it presses down, and therefore cannot transmit power to the cutting tool. The clearance surface design ensures that the connecting rod maintains a distance from the movable block when not in operation, avoiding unnecessary contact and wear, extending the die's service life, and ensuring that the connecting rod accurately contacts the movable block during operation, improving the reliability of the punching operation.
[0014] In some embodiments of this application, the bottom surface of the connecting rod is provided with a mating surface, which is adapted to the top surface of the insert and the top surface of the upper template, and the avoidance surface and the mating surface are connected by an inclined surface.
[0015] The design of the contact surface and the inclined surface allows the connecting rod to transition smoothly during movement. Guided by the inclined surface, the connecting rod can be smoothly inserted between the movable block and the upper template, improving the assembly accuracy and ease of operation of the mold.
[0016] In some embodiments of this application, the processing station includes an intermediate plate located between the upper template and the top plate. The intermediate plate has a through hole corresponding to the punching tool, through which the punching tool passes.
[0017] The intermediate plate increases the stability of the mold structure. The through holes on the intermediate plate guide the punching tool, ensuring that the punching tool maintains linear movement during the punching process, thereby improving punching accuracy and mold life.
[0018] In some embodiments of this application, the processing station includes a guide plate located above the upper template. The guide plate has a groove, and the push cylinder drives the connecting rod to move along the length of the groove.
[0019] The design of the guide plate and slide provides precise guidance for the movement of the connecting rod, ensuring that the connecting rod moves along a predetermined trajectory under the drive of the push cylinder, improving the stability and punching accuracy of the mold, while simplifying the operation and maintenance of the mold.
[0020] In some embodiments of this application, multiple processing stations are installed below the upper mold base, and the multiple processing stations are arranged along the direction of material strip movement; multiple punching tools are installed on the movable block in one or more processing stations, and the movement of the movable block drives the multiple punching tools to move synchronously.
[0021] The multiple processing stations allow the mold to complete multiple punching operations in a single work cycle, significantly improving production efficiency. Simultaneously, the synchronous movement of multiple punching tools ensures consistency and accuracy in the punching process, adapting to opening requirements of different shapes and positions.
[0022] In some embodiments of this application, multiple processing stations are installed below the upper mold base, and the multiple processing stations are arranged along the direction of material strip movement; one or more of the processing stations are provided with at least two movable blocks, and the at least two movable blocks are connected to the same connecting rod, and the movement of the connecting rod drives the tool on the movable block to work or be idle.
[0023] By using a single linkage to drive multiple moving blocks, the number and complexity of linkages are reduced, lowering the manufacturing cost and maintenance difficulty of the mold. At the same time, this design improves the mold's integration, making it more compact and further enhancing space utilization efficiency.
[0024] In some embodiments of this application, the push cylinders on all processing stations are respectively connected to a control device, and the control device drives the push cylinders to work according to the preset process.
[0025] The control device enables precise control of each processing station, and can flexibly adjust the punching position and sequence according to the preset process, which improves the versatility and adaptability of the mold, meets the processing requirements of different workpieces, and further improves production efficiency and product quality.
[0026] In some embodiments of this application, the base plate has a scrap outlet corresponding to the punching tool, and the lower die base has a scrap discharge plate corresponding to the processing station. The scrap discharge plate is inclined. When the punching tool punches down, it generates scrap. The scrap falls along the scrap outlet into the scrap discharge plate and then falls down along the scrap discharge plate.
[0027] The waste discharge design effectively solves the problem of waste disposal during punching, preventing waste accumulation from affecting the continuity and quality of punching operations. The inclined waste discharge plate allows waste to be discharged smoothly, reducing the frequency and time of waste cleaning and improving production efficiency.
[0028] Based on common knowledge in the field, the above-described embodiments can be combined arbitrarily. Attached Figure Description
[0029] The present application will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present application. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.
[0030] Figure 1 This is a schematic diagram of the structure of the material strip after processing in this application; Figure 2 This is a schematic diagram of the structure of the strip after it has been formed in this application; Figure 3 This is a schematic diagram of the structure of this application installed on the press; Figure 4 This is a schematic diagram of the structure of this application; Figure 5 This is a top view of this application; Figure 6 for Figure 5 Sectional view of section AA; Figure 7 for Figure 5 Sectional view of section BB; Figure 8 This is a schematic diagram of the internal structure of this application. Figure 1 ; Figure 9 This is a schematic diagram of the internal structure of this application. Figure 2 ; Figure 10 This is a schematic diagram of the internal structure of this application. Figure 3 ; Figure 11 This is a schematic diagram of the internal structure of this application. Figure 4 .
[0031] The specific explanations of the reference numerals in the attached drawings are as follows: 1. Upper mold base; 2. Lower mold base; 3. Base plate; 4. Machining station; 5. Upper template; 6. Top plate; 7. Punching tool; 10. Movable block; 11. Groove; 12. Connecting rod; 13. Push cylinder; 14. Insert; 15. Limiting hole; 16. Rod segment; 17. Punching section; 18. Clearance surface; 19. Fitting surface; 20. Inclined surface; 21. Intermediate plate; 22. Through hole; 23. Guide plate; 24. Slide groove; 25. Control device; 26. Scrap outlet; 27. Scrap discharge plate; 30. Material strip. Detailed Implementation
[0032] The present application will now be described in detail with reference to the accompanying drawings.
[0033] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.
[0034] Flexible pre-punching die for profiles, as in Example 1 Figures 1 to 7 As shown, the device includes an upper die base 1 and a lower die base 2. A base plate 3 is mounted on the lower die base 2, and several processing stations 4 are installed below the upper die base 1. In traditional processes, each punching die needs to be individually designed and manufactured to accommodate openings of different shapes and positions, resulting in high manufacturing and maintenance costs. This application reduces the overall number of dies by setting multiple processing stations 4 on a single upper die base 1. Simultaneously, its structural design enhances the versatility and adjustability of the dies, reducing reliance on individual die customization. Therefore, without sacrificing processing accuracy, it effectively reduces the manufacturing and maintenance costs of the dies, improving the economic benefits for the enterprise.
[0035] By integrating multiple processing stations 4 under a single upper mold base 1, the traditional method of placing multiple independent punching dies in different locations is used to significantly reduce the floor space occupied by the dies in the workshop. What used to require several meters of space to accommodate multiple dies can now be achieved with a single integrated mold unit, significantly improving workshop space utilization and providing more possibilities for expanding production scale and optimizing equipment layout.
[0036] The processing station 4 includes an upper template 5, a top plate 6, and at least one punching cutter 7. The bottom of the punching cutter 7 is a cutting edge, which passes through the top plate 6. The material strip 30 to be processed is connected to a conveying device. The conveying device drives the material strip 30 to pass between the bottom plate 3 and the top plate 6. A movable block 10 is fixedly connected to the upper end of the punching cutter 7. The surface of the upper template 5 has a slot 11 for the movable block 10 to move up and down. The cutting edge of the punching cutter 7 passes through the top plate 6, and the upper end of the punching cutter 7 is fixedly connected to the movable block 10. This structural design ensures the stability of the punching cutter 7 during the punching process, thereby ensuring the accuracy and consistency of the punching operation. It reduces processing errors caused by a large number of molds and complex operations, improves the stability of product quality, and is of great significance for the smooth progress of subsequent bending, assembly, and other processes, thus helping to improve the overall quality level of automotive parts processing.
[0037] A predetermined distance exists between the movable block 10 and the upper mold base 1. A connecting rod 12 is provided between the movable block 10 and the upper mold base 1. The connecting rod 12 is connected to a push cylinder 13. When the push cylinder 13 operates, it causes the connecting rod 12 to move to contact or disengage from the movable block 10. When the upper mold base 1 presses down, it causes the movable block 10 to punch downwards via the connecting rod 12. The connecting rod 12 is used to fill the distance between the movable block 10 and the upper mold base 1. When the upper mold base 1 presses down, it causes the movable block 10 to punch downwards via the connecting rod 12. The connecting rod 12 is connected to the push cylinder 13. When the push cylinder 13 operates, it causes the connecting rod 12 to move to contact or disengage from the movable block 10. That is, this application controls whether the movable block 10 and the punching tool 7 corresponding to the push cylinder 13 are working by controlling whether the push cylinder 13 is working.
[0038] When the strip 30 is driven by the conveyor to pass between the base plate 3 and the top plate 6, and moves to the corresponding processing station 4, the push cylinder 13 operates, and the upper die base 1 presses down, realizing the processing of the strip 30 at this point. The strip 30 continues to move, moving to the next processing position and matching the processing station 4 at that position. The push cylinder 13 at this processing station 4 operates, and the upper die base 1 presses down, completing the processing of the strip 30 at this point. When the entire strip 30 passes through the flexible pre-punching die of the profile, the die also completes multiple punchings under control. Each punching, depending on whether the push cylinder 13 is working, drives the same or different punching tools 7 to work, which can well match the processing requirements of the strip 30.
[0039] Example 2, as Figures 1 to 7As shown, the push cylinders 13 on all processing stations 4 are connected to the control device 25. The control device 25 drives the push cylinders 13 to work according to the preset process. The control device 25 enables precise control of each processing station 4, and can flexibly adjust the punching position and sequence according to the preset process, improving the versatility and adaptability of the mold, meeting the processing requirements of different workpieces, and further improving production efficiency and product quality.
[0040] The base plate 3 has a scrap outlet 26 corresponding to the punching tool 7. The lower die base 2 has a scrap discharge plate 27 corresponding to the machining station 4. The scrap discharge plate 27 is inclined. When the punching tool 7 punches down, the scrap generated falls along the scrap outlet 26 into the scrap discharge plate 27 and continues to fall down. This scrap discharge design effectively solves the problem of scrap handling during punching, preventing scrap accumulation from affecting the continuity and quality of the punching operation. The inclined scrap discharge plate 27 allows scrap to be discharged smoothly, reducing the frequency and time of scrap cleaning and improving production efficiency.
[0041] Multiple processing stations 4 are installed below the upper die base 1, and these stations are arranged along the direction of material strip 30's advance. Multiple punching tools 7 are mounted on movable blocks 10 within one or more of these processing stations 4. Movement of the movable blocks 10 causes the multiple punching tools 7 to move synchronously. The arrangement of multiple processing stations 4 allows the die to complete multiple punching operations in one work cycle, significantly improving production efficiency. Simultaneously, the synchronous movement design of the multiple punching tools 7 ensures the consistency and accuracy of the punching operation, adapting to opening requirements of different shapes and positions.
[0042] Multiple processing stations 4 are installed below the upper mold base 1, arranged along the direction of material strip 30 advance. At least two movable blocks 10 are provided in one or more of these processing stations 4, and these two movable blocks 10 are connected to the same connecting rod 12. The movement of the connecting rod 12 drives the cutting tools on the movable blocks 10 to operate or remain idle. By driving multiple movable blocks 10 with a single connecting rod 12, the number and complexity of the connecting rods 12 are reduced, lowering the manufacturing cost and maintenance difficulty of the mold. Simultaneously, this design improves the integration of the mold, making it more compact and further enhancing space utilization efficiency.
[0043] The rest of the contents of Example 2 are the same as those of Example 1.
[0044] Example 3, as Figures 1 to 11As shown, an insert 14 is installed on the top plate 6. The insert 14 has a limiting hole 15 for the cutting edge of the punching tool 7 to pass through. The punching tool 7 includes a rod segment 16 and a punching segment 17. The diameter of the rod segment 16 is larger than the diameter of the punching segment 17. The limiting hole 15 is a stepped hole, which restricts the extreme position of the punching tool 7's downward punch. Through the limiting design of the stepped hole on the insert 14, the extreme position of the punching tool 7's downward punch is precisely controlled, ensuring consistent punching depth and processing accuracy, and improving product quality stability. Compared to directly erecting the limiting hole 15 on the top plate 6, using the insert 14 to set the limiting hole 15 allows the insert 14 to be made of wear-resistant material, making it more wear-resistant and easier to replace after wear.
[0045] The top surface of the connecting rod 12 is in contact with the upper die base 1. The connecting rod 12 includes a head section and a tail section. The tail section of the connecting rod 12 is connected to the output shaft of the push cylinder 13. The bottom surface of the head section of the connecting rod 12 is provided with a clearance surface 18. When the clearance surface 18 of the connecting rod 12 is above the movable block 10, there is a gap between the connecting rod 12 and the movable block 10. That is, when the clearance surface 18 of the connecting rod 12 is above the movable block 10, the connecting rod 12 cannot fill the gap between the movable block 10 and the upper die base 1. At this time, the upper die base 1 cannot transmit power to the movable block 10 when it presses down, and therefore cannot transmit it to the cutting tool. The clearance surface 18 design allows the connecting rod 12 to maintain a gap with the movable block 10 when it is not working, avoiding unnecessary contact and wear, extending the service life of the die, and ensuring that the connecting rod 12 can accurately contact the movable block 10 when working, improving the reliability of the punching operation.
[0046] The bottom surface of the connecting rod 12 is provided with a contact surface 19, which is adapted to the top surface of the insert 14 and the top surface of the upper template 5. The clearance surface 18 is connected to the contact surface 19 by an inclined surface 20. The design of the contact surface 19 and the inclined surface 20 allows the connecting rod 12 to transition smoothly during movement. Guided by the inclined surface 20, the connecting rod 12 can be smoothly inserted between the movable block 10 and the upper template 5, improving the assembly accuracy and ease of operation of the mold.
[0047] The processing station 4 includes an intermediate plate 21, which is located between the upper template 5 and the top plate 6. The intermediate plate 21 has a through hole 22 corresponding to the punching tool 7, through which the punching tool 7 passes. The intermediate plate 21 increases the stability of the mold structure. By guiding the punching tool 7 through the through hole 22, the intermediate plate 21 ensures that the punching tool 7 maintains linear motion during the punching process, thereby improving punching accuracy and the service life of the mold.
[0048] The processing station 4 includes a guide plate 23, which is located above the upper template 5. The guide plate 23 has a groove 24. The push cylinder 13 drives the connecting rod 12 to move along the length of the groove 24. The design of the guide plate 23 and the groove 24 provides precise guidance for the movement of the connecting rod 12, ensuring that the connecting rod 12 moves along a predetermined trajectory under the drive of the push cylinder 13, improving the stability and punching accuracy of the mold, while simplifying the operation and maintenance of the mold.
[0049] The other contents of Example 3 are the same as those of Example 1 or Example 2.
[0050] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The descriptions of the embodiments above are only for the purpose of helping to understand the present application and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.
Claims
1. A flexible pre-punching die for profiles, characterized in that, The system includes an upper mold base (1) and a lower mold base (2). A base plate (3) is provided on the lower mold base (2). Several processing stations (4) are installed below the upper mold base (1). Each processing station (4) includes an upper template (5), a top plate (6), and at least one punching tool (7). The bottom of the punching tool (7) is a cutting edge, and the cutting edge of the punching tool (7) passes through the top plate (6). The material strip (30) to be processed is connected to a conveying device. The conveying device drives the material strip (30) to be processed to pass between the base plate (3) and the top plate (6). The upper part of the punching tool (7) is... A movable block (10) is fixedly connected to the end. The upper template (5) has a slot (11) on its surface for the movable block (10) to move up and down. There is a predetermined distance between the movable block (10) and the upper mold base (1). A connecting rod (12) is provided between the movable block (10) and the upper mold base (1). The connecting rod (12) is connected to a push cylinder (13). When the push cylinder (13) works, it drives the connecting rod (12) to move to contact and connect with the movable block (10) or to disengage from the movable block (10). When the upper mold base (1) presses down, it drives the movable block (10) to press down through the connecting rod (12).
2. The flexible pre-punching die for profiles according to claim 1, characterized in that, An insert (14) is installed on the top plate (6). The insert (14) is provided with a limiting hole (15) through which the blade of the punching tool (7) passes. The punching tool (7) includes a rod segment (16) and a punching segment (17). The diameter of the rod segment (16) is larger than the diameter of the punching segment (17). The limiting hole (15) is a stepped hole, which limits the extreme position of the punching tool (7) downward.
3. The flexible pre-punching die for profiles according to claim 1, characterized in that, The top surface of the connecting rod (12) is in contact with the upper mold base (1). The connecting rod (12) includes a head section and a tail section. The tail section of the connecting rod (12) is connected to the output shaft of the push cylinder (13). The bottom surface of the head section of the connecting rod (12) is provided with a clearance surface (18). When the clearance surface (18) of the connecting rod (12) is located above the movable block (10), there is a gap between the connecting rod (12) and the movable block (10).
4. The flexible pre-punching die for profiles according to claim 3, characterized in that, The bottom surface of the connecting rod (12) is provided with a fitting surface (19), which is adapted to the top surface of the insert (14) and the top surface of the upper template (5). The clearance surface (18) and the fitting surface (19) are connected by an inclined surface (20).
5. The flexible pre-punching die for profiles according to claim 1, characterized in that, The processing station (4) includes an intermediate plate (21), which is located between the upper template (5) and the top plate (6). The intermediate plate (21) has a through hole (22) corresponding to the punching tool (7), through which the punching tool (7) passes.
6. The flexible pre-punching die for profiles according to claim 1, characterized in that, The processing station (4) includes a guide plate (23), which is located above the upper template (5). The guide plate (23) has a groove (24). The push cylinder (13) drives the connecting rod (12) to move along the length of the groove (24).
7. The flexible pre-punching die for profiles according to claim 1, characterized in that, Multiple processing stations (4) are installed below the upper mold base (1), and the multiple processing stations (4) are set along the direction of the material strip (30) moving forward; multiple punching tools (7) are installed on the movable block (10) in one or more of the processing stations (4), and the movement of the movable block (10) drives the multiple punching tools (7) to move synchronously.
8. The flexible pre-punching die for profiles according to claim 7, characterized in that, Multiple processing stations (4) are installed below the upper mold base (1). The multiple processing stations (4) are set along the direction of the material strip (30) moving. At least two movable blocks (10) are set in one or more of the processing stations (4). At least two movable blocks (10) are connected to the same connecting rod (12). The moving of the connecting rod (12) drives the tool on the movable block (10) to work or be idle.
9. The flexible pre-punching die for profiles according to claim 7, characterized in that, The push cylinders (13) on all processing stations (4) are connected to the control device (25), and the control device (25) drives the push cylinders (13) to work according to the preset process.
10. The flexible pre-punching die for the profile according to claim 1, characterized in that, The base plate (3) has a waste outlet (26) corresponding to the punching tool (7). The lower die base (2) has a waste discharge plate (27) corresponding to the processing station (4). The waste discharge plate (27) is inclined. The punching tool (7) punches down to generate waste. The waste falls into the waste discharge plate (27) along the waste outlet (26) and falls down along the waste discharge plate (27).