Modular quick-change type surface stamping die

Abstract

This invention discloses a modular quick-change profile stamping die, including a die base, multiple profile inserts, a guiding mechanism, and a fixing mechanism. The die base has threaded holes; multiple profile inserts are connected to the die base and abut against each other in sequence, and each profile insert has a receiving groove; the guiding mechanism includes a guide block and a guide rail, the guide rail is connected to the die base and extends along the length of the die base, the guide block is connected to the profile insert, and the guide block is slidably connected to the guide rail; the fixing mechanism includes bolts, the bolts are threaded into the threaded holes, and the bolts pass through the receiving grooves. The beneficial effects of this invention are: it splits the one-piece forming profile into multiple independent profile inserts, eliminating the need to develop a complete set of dies for different curved surface features; product changeover can be completed simply by replacing profile inserts with different structures; the die base, guiding structure, and other general structures can be reused repeatedly, significantly reducing the number of dies developed and shortening the new product development cycle.

Description

Technical Field

[0001] This invention relates to the field of mold manufacturing, and specifically to a modular quick-change profile stamping mold. Background Technology

[0002] In the field of precision forming of curved sheet metal parts, such as automotive body panels, home appliance panels, and new energy battery casings, the requirements for product appearance and surface curvature are high, and the forming accuracy is strict. Furthermore, the current market is experiencing rapid product updates and iterations, with personalized and customized orders increasing year by year. The production model is gradually shifting from traditional large-scale, single-product production to multi-variety, small-batch, and flexible production. In actual production, factories often need to frequently switch between sheet metal workpieces with different curvatures, contours, and concave-convex features at the same stamping press station for stamping, placing higher demands on the versatility, changeover speed, and ease of maintenance of the molds.

[0003] Traditional integral stamping dies typically employ a one-piece casting or a fixed, insert-based structure for forming the profile, resulting in a non-separable, integral structure. For sheet metal parts with different curved surfaces and specifications, companies usually need to develop, process, and store dedicated stamping dies, leading to significant investment in die development, long processing cycles, and high R&D and production costs. Furthermore, traditional integral dies lack versatility; die bases and mounting bases cannot be reused, requiring a complete set of dies for each product, resulting in large inventory and significant space occupation. In addition, during the stamping process of curved sheet metal parts, the die surface is subjected to long-term impact loads and frictional wear, easily leading to defects such as surface scratches, wear, and dents. When a traditional integral die is partially damaged, the damaged part cannot be replaced individually; the entire die must be disassembled and repaired or scrapped, resulting in long repair cycles, high maintenance costs, and severely impacting production line speed. Therefore, this application proposes a modular, quick-change profile stamping die. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a modular quick-change profile stamping die to solve the technical problem that the integrated die in the prior art is difficult to adapt to the production needs of multiple varieties and small batches.

[0005] To achieve the above technical objectives, the present invention provides a modular quick-change profile stamping die, including a die base, wherein the die base is provided with a threaded hole; Multiple shaped inserts are connected to the mold base and abut against each other in sequence. Each shaped insert is provided with a receiving groove. A guiding mechanism includes a guide block and a guide rail, the guide rail being connected to the mold base and extending along the length direction of the mold base; the guide block being connected to the profile insert and slidably connected to the guide rail; and... The fixing mechanism includes a bolt, which is threaded into the threaded hole and passes through the receiving groove.

[0006] In some embodiments, the stamping die further includes a positioning mechanism, the positioning mechanism includes a positioning block, the die base is provided with a positioning hole, the profile insert is provided with a positioning groove, the positioning block is slidably connected to the positioning hole and the positioning groove, and the side of the positioning block near the profile insert is spherical.

[0007] In some embodiments, the positioning mechanism further includes a telescopic rod and a spring, one end of the telescopic rod being connected to the mold base and the other end being connected to the positioning block, and the spring being connected to the telescopic rod to cause the positioning block to tend to slide toward the surface insert.

[0008] In some embodiments, the telescopic rod includes a first rod body and a second rod body. The first rod body is connected to the mold base, and the second rod body is slidably connected to the first rod body along the length direction of the first rod body. One end of the second rod body away from the first rod body is connected to the profile insert. The spring is sleeved on the first rod body and the second rod body. One end of the spring is connected to the first rod body, and the other end of the spring is connected to the second rod body. The spring is in a compressed state.

[0009] In some embodiments, the positioning mechanism further includes a rotating rod, one end of which is rotatably connected to the mold base, and the other end of which is connected to the first rod body, so that the positioning block is aligned or misaligned with the positioning hole.

[0010] In some embodiments, the fixing mechanism further includes a screw cylinder, which is threadedly connected to the mold base, and the threaded hole is provided in the screw cylinder.

[0011] In some embodiments, the fixing mechanism further includes a limiting ring and two buffer rings. The limiting ring is connected to the end of the screw cylinder. The mold base is provided with a limiting groove for accommodating the limiting ring. The two buffer rings are respectively connected to both sides of the limiting ring. One buffer ring abuts against the inner wall of the limiting groove, and the other buffer ring abuts against the nut of the bolt.

[0012] In some embodiments, the fixing mechanism further includes a self-lubricating component, which includes a lubricating sleeve connected to the screw cylinder. The lubricating sleeve has a lubricating cavity inside, which contains a lubricant. The lubricating sleeve has lubricating holes on both its inner and outer sides.

[0013] In some embodiments, the lubricating sleeve is provided with a flow-guiding expansion joint, which extends along the axial direction of the lubricating sleeve. When the bolt is screwed into the screw cylinder, the flow-guiding expansion joint contracts, and when the bolt is screwed out of the screw cylinder, the flow-guiding expansion joint expands.

[0014] In some embodiments, the flow-guiding expansion joint is arranged in a rotationally inclined manner along the thread direction.

[0015] Compared with the prior art, the beneficial effects of the present invention include: The one-piece molding surface is broken down into multiple independent surface inserts, eliminating the need to develop a complete set of molds for different curved surface features; product changeover can be completed simply by replacing surface inserts with different structures; common structures such as mold bases and guide structures can be reused repeatedly, significantly reducing the number of molds to be developed and shortening the new product development cycle. Adopting a sliding guide structure with guide rails and guide blocks, the inserts can be directly slid and disassembled, making positioning simple and alignment precise; combined with a bolt quick-locking method, the disassembly and assembly steps are simple, requiring no professional large-scale debugging equipment, and the changeover time is short, making it suitable for the production conditions of factories with multiple varieties, small batches, and frequent line changes. Attached Figure Description

[0016] Figure 1 This is a first-view overall structural diagram of the stamping die provided by the present invention; Figure 2 This is a second-view overall structural schematic diagram of the stamping die provided by the present invention; Figure 3 This is a schematic diagram of the overall structure of the positioning mechanism provided by the present invention; Figure 4 This is a cross-sectional view of the overall structure of the stamping die provided by the present invention; Figure 5 This invention provides Figure 4 Enlarged view of the local structure at point A in the middle.

[0017] Explanation of reference numerals in the attached figures: 1. Mold base; 2. Profile insert; 3. Guide mechanism; 31. Guide block; 32. Guide rail; 4. Fixing mechanism; 41. Bolt; 42. Threaded hole; 43. Receiving groove; 44. Screw barrel; 45. Limiting ring; 46. Buffer ring; 47. Limiting groove; 48. Self-lubricating component; 481. Lubrication sleeve; 482. Lubrication cavity; 483. Lubrication hole; 484. Flow guiding expansion joint; 5. Positioning mechanism; 51. Positioning block; 52. Positioning hole; 53. Positioning groove; 54. Spherical shape; 55. Telescopic rod; 551. First rod body; 552. Second rod body; 56. Spring; 57. Rotating rod. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0019] This invention provides a modular quick-change profile stamping die, the structure of which is as follows: Figure 1 - Figure 5 As shown, it includes a mold base 1, multiple surface inserts 2, a guide mechanism 3, and a fixing mechanism 4.

[0020] The mold base 1 is provided with a threaded hole 42.

[0021] Multiple shaped inserts 2 are connected to the mold base 1 and abut against each other in sequence. The shaped inserts 2 are provided with receiving grooves 43.

[0022] The guiding mechanism 3 includes a guide block 31 and a guide rail 32. The guide rail 32 is connected to the mold base 1 and extends along the length of the mold base 1. The guide block 31 is connected to the surface insert 2 and is slidably connected to the guide rail 32.

[0023] The fixing mechanism 4 includes a bolt 41, which is threaded into a threaded hole 42 and passes through a receiving groove 43.

[0024] In use, the guiding mechanism 3 adopts a sliding fit structure between the guide block 31 and the guide rail 32. The guide rail 32 is arranged along the length of the mold base 1, allowing individual profile inserts 2 to slide linearly along the guide rail 32 for quick assembly and disassembly. The assembly and disassembly process does not require repeated position adjustments, ensuring consistent insert assembly. The fixing mechanism 4 uses bolts 41 that pass through the receiving groove 43 of the profile insert 2 and are threadedly connected to the threaded hole 42 of the mold base 1. The axial clamping force of the bolts 41 locks and fixes each profile insert 2 onto the mold base 1. During stamping operations, the forming profile, composed of multiple inserts, shares the stamping load to complete sheet metal forming. When it is necessary to change to workpieces with different curved surfaces or specifications, only the corresponding profile insert 2 needs to be disassembled and the matching insert replaced; there is no need to replace the entire mold, achieving rapid mold changeover.

[0025] In this invention, the one-piece molding surface is divided into multiple independent surface inserts 2, eliminating the need to develop a complete set of molds for different curved surface features; product changeover can be completed simply by replacing the surface inserts 2 with different structures, and general structures such as mold base 1 and guide structure can be reused repeatedly, greatly reducing the number of molds to be developed and shortening the new product development cycle.

[0026] The slide guide structure of guide rail 32 and guide block 31 allows the insert to be directly slidably disassembled and reassembled, making positioning simple and alignment precise. Combined with the quick locking method of bolt 41, the disassembly and assembly steps are simple, requiring no professional large-scale debugging equipment, and the changeover time is short. It can adapt to the production conditions of factories with multiple varieties, small batches, and frequent line changes.

[0027] To improve positioning accuracy, please refer to Figure 3 In a preferred embodiment, the stamping die further includes a positioning mechanism 5, which includes a positioning block 51, a positioning hole 52 on the die base 1, and a positioning groove 53 on the profile insert 2. The positioning block 51 is slidably connected to the positioning hole 52 and the positioning groove 53, and the side of the positioning block 51 near the profile insert 2 is spherical 54.

[0028] During use, the positioning block 51 is simultaneously slidably connected inside the positioning hole 52 and the positioning groove 53, realizing the insertion and positioning between the mold base 1 and the surface insert 2. The end of the positioning block 51 closest to the surface insert 2 is designed as a spherical structure 54. During the assembly process of the surface insert 2 sliding along the guide rail 32, the end face of the spherical shape 54 can preferentially contact the opening of the positioning groove 53, using the spherical arc chamfer to achieve automatic centering guidance. When the surface insert 2 slides to the installation position, the spherical positioning block 51 slides smoothly into the positioning groove 53, eliminating the slight offset caused by the insert assembly; at the same time, the positioning block 51 restricts the lateral and longitudinal movement of the surface insert 2 in the horizontal direction, achieving double limiting in conjunction with the guide mechanism 3. During stamping operations, the positioning block 51 bears part of the shear load, weakening the displacement effect of vibration on the insert; when disassembling the insert, the spherical structure 54 reduces separation resistance, allowing for quick assembly and disassembly without complex alignment, adapting to the frequent and rapid changeover conditions of modular molds.

[0029] To improve the ease of assembly and disassembly of the 2-shaped insert, please refer to... Figure 3 In a preferred embodiment, the positioning mechanism 5 further includes a telescopic rod 55 and a spring 56. One end of the telescopic rod 55 is connected to the mold base 1, and the other end of the telescopic rod 55 is connected to the positioning block 51. The spring 56 is connected to the telescopic rod 55 so that the positioning block 51 tends to slide towards the surface insert 2.

[0030] During use, when assembling the profile insert 2, the sidewall of the insert presses against the spherical end face 54 of the positioning block 51, causing the positioning block 51 to retract under pressure. Simultaneously, the telescopic rod 55 contracts and compresses the spring 56. At this time, the spring 56 generates elastic energy, ensuring the positioning block 51 maintains a pressing tendency towards the profile insert 2. When the profile insert 2 slides to the assembly station and the positioning groove 53 aligns with the positioning block 51, the spring 56 releases its elastic potential energy, pushing the telescopic rod 55 and the positioning block 51 to automatically spring into the positioning groove 53, completing automatic locking and positioning. During the stamping process, the spring 56 continuously applies a pressing force, ensuring the positioning block 51 always fits against the groove wall of the positioning groove 53, eliminating positioning gaps and suppressing minor movement caused by stamping vibrations in the profile insert 2. When disassembling the insert, only external force needs to be applied to slide the insert; the spherical positioning block 51 automatically retracts under force, eliminating the need for manual unlocking and achieving rapid disassembly of the insert.

[0031] To improve the smoothness of the telescopic pole's extension and retraction, please refer to... Figure 3 In a preferred embodiment, the telescopic rod 55 includes a first rod body 551 and a second rod body 552. The first rod body 551 is connected to the mold base 1, and the second rod body 552 is slidably connected to the first rod body 551 along the length direction of the first rod body 551. One end of the second rod body 552 away from the first rod body 551 is connected to the mold insert 2. A spring 56 is sleeved on the first rod body 551 and the second rod body 552. One end of the spring 56 is connected to the first rod body 551, and the other end of the spring 56 is connected to the second rod body 552. The spring 56 is in a compressed state.

[0032] In use, the first rod 551 is fixedly installed inside the mold base 1, and the second rod 552 slides along the axial direction of the first rod 551 to realize the telescopic movement of the telescopic rod 55. A spring 56 is sleeved on the outside of the first rod 551 and the second rod 552, with both ends of the spring 56 abutting against the first rod 551 and the second rod 552 respectively. After assembly, the spring 56 is always in a compressed state. Under normal conditions, the compressed spring 56 continuously applies an outward elastic force to the second rod 552, driving the second rod 552 to maintain the sliding tendency of the positioning block 51 towards the molded insert 2. When the insert 2 is assembled, the insert presses against the positioning block 51, causing the second rod 552 to retract towards the first rod 551 under pressure, further compressing the spring 56 to achieve passive avoidance; until the insert slides to the installation position, the positioning groove 53 and the positioning block 51 are aligned, the spring 56 rebounds and pushes the second rod 552 outward, so that the positioning block 51 automatically engages in the positioning groove 53, completing automatic positioning and locking. During the stamping process, the pre-tightening characteristic of the constantly compressed spring 56 is used to keep the positioning block 51 and the positioning groove 53 in close contact, eliminating the fit gap; when disassembling the insert, external force pushes the insert to press against the spherical positioning block 54 51, and the second rod 552 automatically retracts to avoid it, so that the insert can be quickly disassembled without manual unlocking.

[0033] To further improve the ease of assembly and disassembly of the shaped insert 2, please refer to... Figure 3 In a preferred embodiment, the positioning mechanism 5 further includes a rotating rod 57, one end of which is rotatably connected to the mold base 1, and the other end of which is connected to the first rod body 551, so that the positioning block 51 is aligned or misaligned with the positioning hole 52.

[0034] In use, rotating the rotating rod 57 causes a slight displacement of the first rod 551 inside the mold base 1, thereby changing the position of the telescopic rod 55 and the positioning block 51, achieving alignment or misalignment switching between the positioning block 51 and the positioning hole 52. Under normal assembly and use, the rotating rod 57 remains fixed, aligning the positioning block 51 with the positioning hole 52. Under the thrust of the spring 56, the positioning block 51 can pop out normally and engage with the positioning groove 53, completing the precise positioning of the profile insert 2. When it is necessary to disassemble the profile insert 2, manually rotating the rotating rod 57 causes the first rod 551 to shift, misaligning the positioning block 51 with the positioning hole 52. The positioning block 51 shifts laterally and disengages from the positioning groove 53, actively releasing the limiting lock on the profile insert 2. At this point, the profile insert 2 can be directly pulled out without pressing the positioning block 51.

[0035] For easier installation and removal of bolt 41, please refer to... Figure 5 In a preferred embodiment, the fixing mechanism 4 further includes a screw cylinder 44, which is threadedly connected to the mold base 1, and a threaded hole 42 is provided in the screw cylinder 44.

[0036] In use, the screw barrel 44 is first screwed into the pre-set mounting hole of the mold base 1 to fix the screw barrel 44 on the mold base 1. After the bolt 41 passes through the receiving groove 43 of the profile insert 2, it forms a threaded locking fit with the threaded hole 42 inside the screw barrel 44, thereby pressing and fixing the profile insert 2 on the mold base 1. During the stamping process, the mold is subjected to impact loads, which can easily cause the bolt 41 to bend under stress and the thread to deform and seize. This structure changes the original mold base 1 directly tapping the thread to a detachable independent screw barrel 44 bearing the thread pair. When the thread is worn or the bolt 41 is deformed and stuck, there is no need to forcibly remove the stuck bolt 41. The screw barrel 44 can be directly unscrewed from the mold base 1 for replacement. This not only protects the threads of the mold base 1 body from damage and avoids permanent scrapping of the mold base 1, but also allows for separate replacement of the screw barrel 44 and bolt 41, making maintenance and replacement convenient and reducing maintenance costs.

[0037] To improve the stability of the screw barrel 44 and bolt 41, please refer to... Figure 5 In a preferred embodiment, the fixing mechanism 4 further includes a limiting ring 45 and two buffer rings 46. The limiting ring 45 is connected to the end of the screw cylinder 44. The mold base 1 is provided with a limiting groove 47 for accommodating the limiting ring 45. The two buffer rings 46 are respectively connected to the two sides of the limiting ring 45. One buffer ring 46 abuts against the inner wall of the limiting groove 47, and the other buffer ring 46 abuts against the nut of the bolt 41.

[0038] When in use, after the screw cylinder 44 is screwed into the corresponding position of the mold base 1, the limiting ring 45 at the end falls into the limiting groove 47 of the mold base 1. The limiting groove 47 forms circumferential and axial limiting of the limiting ring 45, preventing the screw cylinder 44 from rotating, loosening or moving axially under the stamping vibration condition, and ensuring that the installation position of the screw cylinder 44 is constant and does not deviate. The buffer rings 46 arranged on both sides form two buffer and vibration reduction interfaces. One buffer ring 46 is sandwiched between the limiting ring 45 and the inner wall of the limiting groove 47, which can absorb the impact load and high-frequency vibration generated by stamping, avoid rigid hard contact between the screw barrel 44 and the mold base 1, reduce the thread stress, and prevent the threads of the mold base 1 and the screw barrel 44 from being damaged and stripped by vibration. The other buffer ring 46 is placed between the limiting ring 45 and the nut of the bolt 41, so as to achieve flexible clamping when the bolt 41 is locked, evenly distribute the nut clamping stress, avoid the nut directly and rigidly crushing the end face of the limiting ring 45, and at the same time buffer the transmission of stamping impact to the bolt 41, reducing the tendency of the bolt 41 to bend, deform and thread lock.

[0039] To reduce the possibility of the screw barrel 44 and bolt 41 seizing, please refer to... Figure 5 In a preferred embodiment, the fixing mechanism 4 further includes a self-lubricating component 48, which includes a lubricating sleeve 481 connected to the screw cylinder 44. The lubricating sleeve 481 has a lubricating cavity 482 inside, and a lubricant is provided in the lubricating cavity 482. The lubricating sleeve 481 has lubricating holes 483 on both the inner and outer sides.

[0040] During use, during mold assembly and the screwing of bolt 41 into screw barrel 44, the external thread of bolt 41 contacts the inner wall of lubrication sleeve 481. The lubricant in lubrication cavity 482 can slowly seep out through inner lubrication hole 483, forming a continuous lubrication film between bolt 41 thread and inner wall of lubrication sleeve 481, reducing the frictional resistance of bolt 41 engagement and achieving smooth assembly and disassembly. At the same time, the lubricant inside lubrication cavity 482 can penetrate through outer lubrication hole 483 to the mating gap between outer wall of lubrication sleeve 481 and inner wall of screw barrel 44, lubricating the assembly contact surface of lubrication sleeve 481 and screw barrel 44. Under conditions of high-frequency vibration, temperature rise, and dust intrusion during stamping operations, the lubrication chamber 482 can continuously store and slowly replenish lubricant, and continuously release lubricating medium through the lubrication holes 483 on both the inner and outer sides, keeping the threaded pair and assembly mating surfaces in a lubricated state at all times, effectively preventing thread dry grinding and scoring, rust and jamming, and bolt 41 seizing; at the same time, the lubrication holes 483 can also play the role of chip removal and collection of small abrasive particles, preventing iron filings and impurities from entering the thread meshing area, further ensuring the smoothness and service life of the screw barrel 44 and bolt 41 after long-term repeated disassembly and assembly.

[0041] To improve lubrication, please refer to... Figure 5In a preferred embodiment, the lubrication sleeve 481 is provided with a flow guiding expansion joint 484, which extends along the axial direction of the lubrication sleeve 481. When the bolt 41 is screwed into the screw cylinder 44, the flow guiding expansion joint 484 contracts, and when the bolt 41 is screwed out of the screw cylinder 44, the flow guiding expansion joint 484 expands.

[0042] During use, as the bolt 41 is screwed into the screw barrel 44, the outer circumference of the bolt 41 presses against the inner wall of the lubrication sleeve 481, causing the flow expansion joint 484 to contract radially under pressure. The inner wall of the lubrication sleeve 481 fits tightly against the thread of the bolt 41. On the one hand, it can fit and cover the thread of the bolt 41, so that the lubricant in the lubrication cavity 482 can be evenly attached to the thread surface through the lubrication hole 483 to form a complete lubrication film. On the other hand, the contracted flow expansion joint 484 can reduce the mating clearance and prevent external iron filings and dust from entering the thread meshing area. When bolt 41 is unscrewed from the screw sleeve 44, the compressive force of bolt 41 on lubrication sleeve 481 disappears. The flow expansion joint 484 automatically expands and slots due to its own elasticity. This not only releases the lubricating medium accumulated inside, but also forms an axial flow channel along the flow expansion joint 484, evenly guiding excess lubricant to the entire thread. At the same time, the expanded flow expansion joint 484 can release the mating clearance, reduce the frictional resistance of bolt 41 being unscrewed, and prevent thread damage, jamming, and seizing. It can also discharge wear particles and impurities axially outward through the gap of the flow expansion joint 484, achieving self-chip removal.

[0043] To improve the chip removal effect, please refer to Figure 5 In a preferred embodiment, the flow-guiding expansion joint 484 is arranged in a rotationally inclined manner along the thread direction.

[0044] During use, the fine iron filings and dust generated by stamping can form a spiral conveying path along the rotating and inclined guide expansion joint 484. During the rotation of the bolt 41, they are smoothly discharged outwards and are not easily stuck in the thread gap, thus playing the role of self-discharge of chips and preventing chip accumulation and jamming.

[0045] To better understand this invention, the following is combined with... Figure 1 - Figure 5The working principle of a modular quick-change profile stamping die according to the present invention is described in detail below: The guiding mechanism 3 adopts a sliding fit structure between the guide block 31 and the guide rail 32. The guide rail 32 is arranged along the length direction of the die base 1, so that a single profile insert 2 can slide linearly along the guide rail 32 to complete quick assembly and disassembly. The disassembly and assembly process does not require repeated position correction, ensuring the consistency of the insert assembly. The fixing mechanism 4 uses bolts 41 to pass through the receiving groove 43 of the profile insert 2 and threadedly connect to the threaded hole 42 of the die base 1. The axial clamping force of the bolts 41 locks and fixes each profile insert 2 on the die base 1. During the stamping operation, the forming profile composed of multiple inserts jointly bears the stamping load and completes the forming of the sheet metal. When it is necessary to change to different curved surfaces and different specifications of workpieces, it is only necessary to disassemble the corresponding profile insert 2 and replace the matching insert. It is not necessary to replace the entire die set, realizing quick die change.

[0046] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A modular quick-change profile stamping die, characterized in that, include: Mold base, wherein the mold base is provided with threaded holes; Multiple shaped inserts are connected to the mold base and abut against each other in sequence. Each shaped insert is provided with a receiving groove. A guiding mechanism includes a guide block and a guide rail, the guide rail being connected to the mold base and extending along the length direction of the mold base; the guide block being connected to the profile insert and slidably connected to the guide rail; and... The fixing mechanism includes a bolt, which is threaded into the threaded hole and passes through the receiving groove.

2. The modular quick-change profile stamping die according to claim 1, characterized in that, The stamping die also includes a positioning mechanism, which includes a positioning block, a positioning hole on the die base, a positioning groove on the profile insert, and the positioning block is slidably connected to the positioning hole and the positioning groove. The side of the positioning block near the profile insert is spherical.

3. The modular quick-change profile stamping die according to claim 2, characterized in that, The positioning mechanism further includes a telescopic rod and a spring. One end of the telescopic rod is connected to the mold base, and the other end of the telescopic rod is connected to the positioning block. The spring is connected to the telescopic rod so that the positioning block tends to slide towards the surface insert.

4. The modular quick-change profile stamping die according to claim 3, characterized in that, The telescopic rod includes a first rod body and a second rod body. The first rod body is connected to the mold base, and the second rod body is slidably connected to the first rod body along the length direction of the first rod body. One end of the second rod body away from the first rod body is connected to the shaped surface insert. The spring is sleeved on the first rod body and the second rod body. One end of the spring is connected to the first rod body, and the other end of the spring is connected to the second rod body. The spring is in a compressed state.

5. The modular quick-change profile stamping die according to claim 4, characterized in that, The positioning mechanism further includes a rotating rod, one end of which is rotatably connected to the mold base, and the other end of which is connected to the first rod body, so that the positioning block is aligned or misaligned with the positioning hole.

6. The modular quick-change profile stamping die according to claim 1, characterized in that, The fixing mechanism also includes a screw cylinder, which is threadedly connected to the mold base, and the threaded hole is provided in the screw cylinder.

7. The modular quick-change profile stamping die according to claim 6, characterized in that, The fixing mechanism further includes a limiting ring and two buffer rings. The limiting ring is connected to the end of the screw cylinder. The mold base is provided with a limiting groove for accommodating the limiting ring. The two buffer rings are respectively connected to the two sides of the limiting ring. One buffer ring abuts against the inner wall of the limiting groove, and the other buffer ring abuts against the nut of the bolt.

8. The modular quick-change profile stamping die according to claim 6, characterized in that, The fixing mechanism also includes a self-lubricating component, which includes a lubricating sleeve connected to the screw cylinder. The lubricating sleeve has a lubricating cavity inside, which contains lubricant. The lubricating sleeve has lubricating holes on both its inner and outer sides.

9. The modular quick-change profile stamping die according to claim 8, characterized in that, The lubricating sleeve is provided with a flow guiding expansion joint, which extends along the axial direction of the lubricating sleeve. When the bolt is screwed into the screw cylinder, the flow guiding expansion joint contracts, and when the bolt is screwed out of the screw cylinder, the flow guiding expansion joint expands.

10. The modular quick-change profile stamping die according to claim 9, characterized in that, The flow-guiding expansion joint is set at a rotational inclination along the thread direction.

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