A stamping device for microphone metal shell

Abstract

The present invention belongs to the technical field of metal stamping processing, and specifically refers to a stamping processing device for a microphone metal shell, including a reciprocating stamping expansion mechanism, a delayed rotary grinding mechanism, a reciprocating loading and unloading mechanism and a frame assembly, wherein the frame assembly includes a main body bottom plate and a main body vertical plate, and the main body vertical plate is arranged on the main body bottom plate. During the stamping process, the present invention applies a sufficiently large rotational driving force to the synchronous grinding disc by means of a hard connection to ensure that the synchronous grinding disc can rotate, and in this process, the elastic force is stored by the energy storage coil spring. After the delayed grinding disc contacts the other end of the workpiece body, the delayed grinding disc is unlocked to allow the delayed grinding disc to automatically rotate and grind the other end of the workpiece body; this technical solution not only ensures the organic combination of the two process structures and time, but also ensures the technical effect of deburring both ends of the workpiece body.

Description

Technical Field

[0001] The invention belongs to the technical field of metal stamping processing, and specifically refers to a stamping processing device for a metal shell of a microphone. Background Art

[0002] The metal shell of a microphone is generally a rotating body, with a larger diameter near the top and a relatively smaller diameter at other locations. Therefore, during the production process, a seamless metal tube of a specific length is generally used as the raw material, and one end is punched and expanded.

[0003] Since this specific length of metal tube material is cut from a longer piece of material, there are often a small amount of burrs on both ends of the metal tube. Before or after punching and expanding the hole, it needs to be polished to facilitate the subsequent assembly process.

[0004] In the current production process, stamping and end grinding are often divided into two independent processes, and in the polishing process, the workpiece is generally required to be rotated and reversed to achieve polishing of both ends. This production method has been used for a long time, but there is still room for optimization. If stamping and end grinding can be integrated into one process, it will be able to greatly reduce costs and improve production efficiency. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention proposes a stamping processing device for a microphone metal shell that can polish and grind both ends in sequence during the stamping process; the first issue to be considered in the integration of the two processes is the cross-linkage of the structure and whether they can be carried out synchronously in time; since only one end of the workpiece body is in contact with the mold during the stamping process, the other end of the workpiece body must inevitably be polished after the feed movement of the stamping is completed (at this time, since the inner mold has not been pulled out, it can also be considered to be still in the entire stamping process); however, due to the axial force generated during stamping, there will be a large extrusion force and friction between the workpiece body and the synchronous grinding disk during and after the stamping process. If both ends are rotated at the same time after stamping, the synchronous grinding disk is likely to be unable to rotate when driven only by the elastic force of the energy storage coil spring.

[0006] Based on the above considerations, the present invention proposes a technical solution for sequential rotational grinding of both ends: during the stamping process, a sufficiently large rotational driving force is applied to the synchronous grinding disk through a hard connection to ensure that the synchronous grinding disk can rotate, and in this process, the elastic force is stored by the energy storage spring. After the delayed grinding disk contacts the other end of the workpiece body, the delayed grinding disk is unlocked to automatically rotate and grind the other end of the workpiece body (the extrusion pressure between the workpiece body and the delayed grinding disk is relatively small, and the required rotational driving force is also small). This technical solution not only ensures the organic combination of the two process structures and time, but also ensures the technical effect of deburring both ends of the workpiece body.

[0007] The technical solution adopted by the present invention is as follows: The present invention proposes a stamping processing device for a microphone metal shell, including a reciprocating stamping and expanding mechanism, a delayed rotary polishing mechanism, a reciprocating loading and unloading mechanism and a frame assembly, the frame assembly includes a main body bottom plate and a main body vertical plate, the main body vertical plate is arranged on the main body bottom plate, the reciprocating stamping and expanding mechanism is arranged on the main body vertical plate, the delayed rotary polishing mechanism is rotatably arranged on the main body vertical plate, and the reciprocating loading and unloading mechanism is slidably arranged on the main body bottom plate.

[0008] This solution is based on the specific feature that one end of the workpiece body maintains contact with the synchronous grinding disk during transverse push, while the other end gradually approaches the delayed grinding disk. The delayed rotary grinding mechanism is utilized to achieve the technical effect of sequentially rotary grinding of the two ends of the workpiece body. In this process, the driving force of the stamping is used as the driving force, which not only simplifies the structure, but also allows the grinding speed to be adjusted synchronously when the speed of the stamping process changes through mechanical linkage.

[0009] Furthermore, the reciprocating stamping and expanding mechanism includes a stamping drive assembly, a stamping die assembly and a rotating transmission assembly. The stamping drive assembly is arranged on the main vertical plate, the stamping die assembly is arranged on the stamping drive assembly, and the rotating transmission assembly is rotatably arranged in the main vertical plate.

[0010] Through the linkage between the stamping die assembly and the rotary transmission assembly, when the stamping drive assembly drives the stamping die assembly to move laterally, the synchronous grinding disk can be automatically rotated, thereby achieving the technical effect of synchronously rotating and grinding one end of the workpiece body during the stamping process.

[0011] Preferably, the stamping drive assembly includes a stamping electric push rod and a mold push plate, the stamping electric push rod is fixedly connected to the side of the main body vertical plate, the mold push plate is fixedly connected to the telescopic rod of the stamping electric push rod, and the mold push plate is provided with a flange portion.

[0012] As a further preferred embodiment of the present invention, the stamping die assembly includes an inner die, an outer die and a workpiece body, the inner die is fixedly connected to the die push plate, the outer ring of the inner die is annularly evenly provided with a latching portion, the outer die is arranged on a reciprocating loading and unloading mechanism, a rotating seat is provided at the end of the outer die, and the workpiece body is arranged between the inner die and the outer die.

[0013] Preferably, the rotary transmission assembly includes a rotary threaded rod, a driving screw block and a synchronous grinding disc, a central circular hole is provided on the main vertical plate, the rotary threaded rod is rotatably arranged in the central circular hole, a polygonal connecting portion is provided at one end of the rotary threaded rod, the driving screw block is fixedly connected to the interior of the inner mold, the rotary threaded rod and the driving screw block are threadedly connected, the synchronous grinding disc is rotatably arranged in a rotary clamping seat, a polygonal sleeve portion matching the polygonal connecting portion is provided on the synchronous grinding disc, and the polygonal connecting portion is snap-fitted and slidably arranged in the polygonal sleeve portion.

[0014] Since there is a large squeezing force and friction force between the workpiece body and the synchronous grinding disc during the stamping process, the rotational driving force of the synchronous grinding disc can be sufficient to overcome the friction force and rotate through a hard connection.

[0015] Furthermore, the delayed rotation polishing mechanism includes a pre-rotation energy storage component and a delayed rotation component, wherein the pre-rotation energy storage component is rotatably disposed on the main body vertical plate, and the delayed rotation component is slidably disposed on the pre-rotation energy storage component.

[0016] By delaying the elastic force storage and release of the rotary grinding mechanism, the technical effect of rotary grinding the other end of the workpiece body can be achieved after the delayed grinding disc comes into contact with the workpiece body.

[0017] By grinding at both ends in sequence, on the one hand, the demand for rotational driving force during the grinding process can be reduced, thereby reducing the parameter requirements when designing the delayed rotation grinding mechanism; on the other hand, it also avoids the problem that when the extrusion pressure between the synchronous grinding disk and the workpiece body is too large, the elastic force of the energy storage coil spring alone cannot drive the synchronous grinding disk to rotate.

[0018] Preferably, the pre-rotation energy storage assembly includes a driving gear, a transfer gear shaft, an energy storage gear ring and an adsorption magnetic ring. The driving gear is engaged with the other end of the rotating threaded rod. The main body vertical plate is also provided with a top circular hole. The transfer gear shaft is rotatably arranged in the top circular hole. One end of the transfer gear shaft is meshed with the driving gear for transmission. The energy storage gear ring is rotatably arranged on the side of the main body vertical plate. The other end of the transfer gear shaft is meshed with the energy storage gear ring for transmission. Transverse sliding bars are symmetrically arranged on the energy storage gear ring.

[0019] Through the linkage of the pre-rotation energy storage component, the energy storage ring can be rotated during the rotation of the rotating threaded rod, so that the energy storage coil spring stores elastic potential energy due to deformation, and after the delayed grinding disc is unlocked, the delayed grinding disc is rotated by this elastic potential energy, thereby performing rotational grinding on the flared end of the workpiece body.

[0020] As a further preferred embodiment of the present invention, the delayed rotation assembly includes an energy storage ring, an energy storage coil spring, a delayed grinding disc and a locking spring. The energy storage ring is symmetrically provided with sliding ears. The energy storage ring is slidably arranged on the transverse sliding rod through the engagement of the sliding ears. The energy storage coil spring is arranged between the energy storage ring and the delayed grinding disc. The delayed grinding disc is slidably arranged on the inner mold. The inner ring of the delayed grinding disc is evenly distributed with a locking tooth portion 2 that cooperates with the locking tooth portion 1. The locking spring is arranged between the delayed grinding disc and the flange portion.

[0021] The adsorption magnetic ring is fixedly connected to the energy storage coil spring, and there is a magnetic adsorption force between the adsorption magnetic ring and the delayed grinding disc.

[0022] Furthermore, a middle partition and a transverse sliding groove are provided on the main body bottom plate.

[0023] Furthermore, the reciprocating loading and unloading mechanism includes a sliding base, a mold transverse movement support and a loading and unloading push rod. The sliding base is snap-fitted and slidably arranged in the transverse movement groove. A mounting base is provided on the sliding base. The outer mold is snap-fitted and arranged in the mounting base. The outer mold and the sliding base are fixedly connected. The mold transverse movement support is arranged on the main body bottom plate. The outer mold is placed on the mold transverse movement support. The outer mold and the mold transverse movement support are in sliding contact. The fixed end of the loading and unloading push rod is arranged on the middle partition plate, and the telescopic end of the loading and unloading push rod is arranged on the sliding base.

[0024] Through the reciprocating extension and retraction of the loading and unloading push rod, the sliding base and the outer mold can be driven to slide reciprocatingly, so that loading and unloading can be performed through the external mechanism when the outer mold and the rotating threaded rod are separated.

[0025] The beneficial effects achieved by the present invention using the above structure are as follows:

[0026] (1) This scheme is based on the specific situation that one end of the workpiece body keeps in contact with the synchronous grinding disk and the other end gradually approaches the delayed grinding disk during the lateral push. The delayed rotary grinding mechanism is used to achieve the technical effect of sequentially rotating and grinding the two ends of the workpiece body. In this process, the driving force of the stamping is used as the driving force, which not only simplifies the structure, but also allows the grinding speed to be adjusted synchronously when the speed of the stamping process changes through mechanical linkage.

[0027] (2) Through the linkage between the stamping die assembly and the rotary transmission assembly, when the stamping drive assembly drives the stamping die assembly to move horizontally, the synchronous grinding disc can be automatically rotated, thereby achieving the technical effect of synchronously rotating and grinding one end of the workpiece body during the stamping process.

[0028] (3) By delaying the elastic force storage and release of the rotary grinding mechanism, the technical effect of rotary grinding the other end of the workpiece body can be achieved after the delayed grinding disc and the workpiece body come into contact.

[0029] (4) By grinding at both ends in sequence, on the one hand, the demand for rotational driving force during the grinding process can be reduced, thereby reducing the parameter requirements when designing the delayed rotation grinding mechanism; on the other hand, it also avoids the problem that when the extrusion pressure between the synchronous grinding disk and the workpiece body is too large, the elastic force of the energy storage coil spring alone cannot drive the synchronous grinding disk to rotate.

[0030] (5) Since there is a large extrusion force and friction between the workpiece body and the synchronous grinding disc during the stamping process, the rotational driving force of the synchronous grinding disc can be sufficient to overcome this friction and rotate through a hard connection.

[0031] (6) Through the linkage of the pre-rotation energy storage component, the energy storage ring can be rotated during the rotation of the rotating threaded rod, so that the energy storage coil spring stores elastic potential energy due to deformation, and after the delayed grinding disc is unlocked, the delayed grinding disc is rotated by this elastic potential energy, thereby performing rotational grinding on the flared end of the workpiece body. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A three-dimensional diagram of a stamping processing device for a metal housing of a microphone proposed by the present invention;

[0033] Figure 2 A front view of a punching device for a metal housing of a microphone proposed by the present invention;

[0034] Figure 3 It is a left view of a punching processing device for a metal housing of a microphone proposed by the present invention;

[0035] Figure 4 A top view of a stamping device for a metal housing of a microphone proposed by the present invention;

[0036] Figure 5 for Figure 2 A cross-sectional view along the cutting line AA;

[0037] Figure 6 for Figure 5 A cross-sectional view along the cutting line BB;

[0038] Figure 7 An exploded schematic diagram of a punching processing device for a microphone metal housing proposed by the present invention;

[0039] Figure 8 for Figure 5 A partial enlarged view of point Ⅰ in the middle;

[0040] Fig. 9 for Figure 7 A partial enlarged view of the middle II;

[0041] Fig.10 for Figure 7 A partial enlarged view of the middle part III;

[0042] Fig.11 for Figure 5 A partial enlarged view of point IV in the middle.

[0043] Among them, 1. Reciprocating stamping expansion mechanism, 2. Delayed rotary grinding mechanism, 3. Reciprocating loading and unloading mechanism, 4. Frame assembly, 5. Stamping drive assembly, 6. Stamping die assembly, 7. Rotary transmission assembly, 8. Stamping electric push rod, 9. Die push plate, 10. Inner die, 11. Outer die, 12. Workpiece body, 13. Rotating threaded rod, 14. Driving screw block, 15. Synchronous grinding disc, 16. Flange part, 17. Gear part 1, 18. Rotating card seat, 19. Polygonal connecting part, 20. Polygonal sleeve part, 21. Pre-rotation energy storage Components, 22. Delayed rotation component, 23. Driving gear, 24. Transfer gear shaft, 25. Energy storage gear ring, 26. Adsorption magnetic ring, 27. Energy storage ring, 28. Energy storage coil spring, 29. Delayed grinding disc, 30. Stop spring, 31. Horizontal slide bar, 32. Tooth part 2, 33. Sliding base, 34. Mold transverse support, 35. Loading and unloading push rod, 36. Mounting base, 37. Main body bottom plate, 38. Main body vertical plate, 39. Middle partition, 40. Transverse slide groove, 41. Center circular hole, 42. Top circular hole, 43. Sliding ear.

[0044] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0046] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0047] like Figure 1 to Figure 11 As shown, the present invention proposes a stamping processing device for a microphone metal shell, including a reciprocating stamping and expanding mechanism 1, a delayed rotary polishing mechanism 2, a reciprocating loading and unloading mechanism 3 and a frame assembly 4, the frame assembly 4 includes a main body bottom plate 37 and a main body vertical plate 38, the main body vertical plate 38 is arranged on the main body bottom plate 37, the reciprocating stamping and expanding mechanism 1 is arranged on the main body vertical plate 38, the delayed rotary polishing mechanism 2 is rotatably arranged on the main body vertical plate 38, and the reciprocating loading and unloading mechanism 3 is slidably arranged on the main body bottom plate 37.

[0048] A middle partition plate 39 and a transverse sliding groove 40 are provided on the main body bottom plate 37 .

[0049] This solution is based on the specific feature that one end of the workpiece body 12 maintains contact with the synchronous grinding disk 15 during transverse pushing, while the other end gradually approaches the delayed grinding disk 29, and utilizes the delayed rotary grinding mechanism 2 to achieve the technical effect of sequentially rotating and grinding the two ends of the workpiece body 12. In this process, the driving force of the stamping is used as the driving force, which not only simplifies the structure, but also allows the grinding speed to be adjusted synchronously when the speed of the stamping process changes through mechanical linkage.

[0050] The reciprocating loading and unloading mechanism 3 includes a sliding base 33, a mold transverse movement support 34 and an loading and unloading push rod 35. The sliding base 33 is slidably engaged in the transverse movement groove 40. A mounting base 36 is provided on the sliding base 33. The outer mold 11 is engaged in the mounting base 36. The outer mold 11 and the sliding base 33 are fixedly connected. The mold transverse movement support 34 is arranged on the main body bottom plate 37. The outer mold 11 is placed on the mold transverse movement support 34. The outer mold 11 and the mold transverse movement support 34 are in sliding contact. The fixed end of the loading and unloading push rod 35 is arranged on the middle partition 39, and the telescopic end of the loading and unloading push rod 35 is arranged on the sliding base 33.

[0051] By reciprocating and extending the loading and unloading push rod 35, the sliding base 33 and the outer mold 11 can be driven to slide reciprocatingly, so that loading and unloading can be performed through an external mechanism when the outer mold 11 and the rotating threaded rod 13 are separated.

[0052] The reciprocating stamping and expanding mechanism 1 includes a stamping drive assembly 5, a stamping die assembly 6 and a rotating transmission assembly 7. The stamping drive assembly 5 is arranged on the main body vertical plate 38, the stamping die assembly 6 is arranged on the stamping drive assembly 5, and the rotating transmission assembly 7 is rotatably arranged in the main body vertical plate 38.

[0053] Through the linkage between the stamping die assembly 6 and the rotary transmission assembly 7, when the stamping drive assembly 5 drives the stamping die assembly 6 to move horizontally, the synchronous grinding disc 15 can be automatically rotated, thereby achieving the technical effect of synchronously rotating and grinding one end of the workpiece body 12 during the stamping process.

[0054] The stamping drive assembly 5 includes a stamping electric push rod 8 and a mold push plate 9. The stamping electric push rod 8 is fixedly connected to the side of the main body vertical plate 38. The mold push plate 9 is fixedly connected to the telescopic rod of the stamping electric push rod 8. The mold push plate 9 is provided with a flange portion 16.

[0055] The stamping die assembly 6 includes an inner die 10, an outer die 11 and a workpiece body 12. The inner die 10 is fixedly connected to the die push plate 9. The outer ring of the inner die 10 is evenly distributed with a tooth portion 17. The outer die 11 is arranged on the reciprocating loading and unloading mechanism 3. A rotating seat 18 is provided at the end of the outer die 11. The workpiece body 12 is arranged between the inner die 10 and the outer die 11.

[0056] The rotary transmission assembly 7 includes a rotary threaded rod 13, a driving screw block 14 and a synchronous grinding disc 15. A central circular hole 41 is provided on the main vertical plate 38. The rotary threaded rod 13 is rotatably disposed in the central circular hole 41. A polygonal connecting portion 19 is provided at one end of the rotary threaded rod 13. The driving screw block 14 is fixedly connected to the interior of the inner mold 10. The rotary threaded rod 13 and the driving screw block 14 are threadedly connected. The synchronous grinding disc 15 is rotatably disposed in the rotary clamping seat 18. The synchronous grinding disc 15 is provided with a polygonal sleeve portion 20 matching the polygonal connecting portion 19. The polygonal connecting portion 19 is snap-fitted and slidably disposed in the polygonal sleeve portion 20.

[0057] Since there is a large squeezing force and friction force between the workpiece body 12 and the synchronous grinding disc 15 during the stamping process, the rotational driving force of the synchronous grinding disc 15 can be sufficient to overcome the friction force and rotate through hard connection.

[0058] The delayed rotation grinding mechanism 2 includes a pre-rotation energy storage component 21 and a delayed rotation component 22 . The pre-rotation energy storage component 21 is rotatably disposed on the main body vertical plate 38 , and the delayed rotation component 22 is slidably disposed on the pre-rotation energy storage component 21 .

[0059] By delaying the elastic force storage and release of the rotary grinding mechanism 2 , the technical effect of rotary grinding the other end of the workpiece body 12 can be achieved after the delayed grinding disc 29 comes into contact with the workpiece body 12 .

[0060] By grinding the two ends in sequence, on the one hand, the demand for rotational driving force during the grinding process can be reduced, thereby reducing the parameter requirements when designing the delayed rotation grinding mechanism 2; on the other hand, it also avoids the problem that when the extrusion force between the synchronous grinding disk 15 and the workpiece body 12 is too large, the elastic force of the energy storage coil spring 28 alone cannot drive the synchronous grinding disk 15 to rotate.

[0061] The pre-rotation energy storage assembly 21 includes a driving gear 23, a transfer gear shaft 24, an energy storage gear ring 25 and an adsorption magnetic ring 26. The driving gear 23 is engaged with the other end of the rotating threaded rod 13. A top circular hole 42 is also provided on the main vertical plate 38. The transfer gear shaft 24 is rotatably arranged in the top circular hole 42. One end of the transfer gear shaft 24 is meshed with the driving gear 23 for transmission. The energy storage gear ring 25 is rotatably arranged on the side of the main vertical plate 38. The other end of the transfer gear shaft 24 is meshed with the energy storage gear ring 25 for transmission. A transverse sliding rod 31 is symmetrically provided on the energy storage gear ring 25.

[0062] Through the linkage of the pre-rotation energy storage assembly 21, the energy storage ring 27 can be rotated during the rotation of the rotating threaded rod 13, so that the energy storage coil spring 28 stores elastic potential energy due to deformation, and after the delayed grinding disc 29 is unlocked, the delayed grinding disc 29 is rotated by this elastic potential energy, thereby performing rotational grinding on the flared end of the workpiece body 12.

[0063] The delayed rotation assembly 22 includes an energy storage ring 27, an energy storage coil spring 28, a delayed grinding disc 29 and a locking spring 30. The energy storage ring 27 is symmetrically provided with sliding ears 43. The energy storage ring 27 is slidably arranged on the transverse sliding rod 31 through the sliding ears 43. The energy storage coil spring 28 is arranged between the energy storage ring 27 and the delayed grinding disc 29. The delayed grinding disc 29 is slidably arranged on the inner mold 10. The inner ring of the delayed grinding disc 29 is evenly distributed with a locking tooth portion 2 32 that cooperates with the locking tooth portion 17. The locking spring 30 is arranged between the delayed grinding disc 29 and the flange portion 16.

[0064] The adsorption magnetic ring 26 is fixedly connected to the energy storage coil spring 28 , and there is a magnetic adsorption force between the adsorption magnetic ring 26 and the delay grinding disc 29 .

[0065] When in use, the user first needs to place the unpunched workpiece body 12 in the outer mold 11 through the external loading device when the loading and unloading push rod 35 is extended and the sliding base 33 and the outer mold 11 are pushed out, and then the sliding base 33 and the outer mold 11 are reset by retracting the loading and unloading push rod 35; and the second latching tooth part 32 is sleeved on the polygonal connecting part 19 to complete the connection between the delayed grinding disc 29 and the rotating threaded rod 13;

[0066] Then, the stamping electric push rod 8 is extended to move the mold push plate 9, the inner mold 10 and the driving screw block 14 in a transverse direction toward the sliding base 33.

[0067] During the lateral movement of the inner mold 10 and the driving screw block 14, on the one hand, one end of the workpiece body 12 is punched by the extrusion between the inner mold 10 and the outer mold 11; on the other hand, through the thread transmission between the driving screw block 14 and the rotating threaded rod 13 (the self-locking between the rotating threaded rod 13 and the driving screw block 14 can be avoided by the design of the thread lead angle and the transmission resistance), the rotating threaded rod 13 will rotate in the central circular hole 41;

[0068] During the stamping process, the workpiece body 12 cannot rotate due to the support limit of the inner mold 10, and the rotating threaded rod 13 will rotate with the synchronous grinding disc 15 during the self-rotation process. Therefore, the rotating synchronous grinding disc 15 during the stamping process can grind one end of the workpiece body 12.

[0069] During the rotation of the rotating threaded rod 13, the driving gear 23 is also rotated, and through the meshing transmission of the intermediate gear shaft 24, the energy storage gear ring 25 is rotated, and the energy storage gear ring 25 rotates with the energy storage ring 27. At this time, the delayed grinding disc 29 cannot rotate relative to the inner mold 10 due to the locking of the locking tooth part 17 and the locking tooth part 2 32. Therefore, the delayed rotation grinding mechanism 2 located between the energy storage ring 27 and the delayed grinding disc 29 is deformed and stores elastic potential energy.

[0070] In the final stage of the stamping feed, the delayed grinding disc 29 cannot be pushed forward after contacting the workpiece body 12. At this time, the inner mold 10 continues to move forward, which will cause axial displacement between the delayed grinding disc 29 and the inner mold 10. When the latch tooth portion 17 and the latch tooth portion 2 32 are separated, the delayed grinding disc 29 will be automatically unlocked. At this time, the delayed grinding disc 29 rotates under the elastic force of the energy storage coil spring 28 to grind the other end of the workpiece body 12. Since the extrusion force and friction force between the delayed grinding disc 29 and the workpiece body 12 are relatively small (provided by the locking spring 30), the elastic force of the energy storage coil spring 28 is sufficient to drive the delayed grinding disc 29 to rotate.

[0071] The extrusion force and friction force between the synchronous grinding disc 15 and the workpiece body 12 are relatively large, and the extrusion force and friction force between the delayed grinding disc 29 and the workpiece body 12 are relatively small, but both are sufficient to remove burrs at both ends of the workpiece body 12.

[0072] After the stamping and grinding processes are completed, the outer mold 11 can be pushed out of position by extending the loading and unloading push rod 35. After the outer mold 11 is separated from the rotating threaded rod 13, the stamped workpiece body 12 can be removed by the external unloading device.

[0073] Subsequently, the die push plate 9 is reset by the retraction of the stamping electric push rod 8; after the workpiece body 12 is removed, the delayed grinding disc 29 and the inner die 10 have a tendency to resume engagement under the elastic force of the locking spring 30, and as the stamping electric push rod 8 retracts, the rotating threaded rod 13 rotates in the opposite direction, and before the delayed grinding disc 29 and the inner die 10 are combined, the delayed grinding disc 29 will also rotate with the energy storage ring 27, so after the stamping electric push rod 8 retracts a small amplitude, the delayed grinding disc 29 and the inner die 10 will complete the combination and synchronously translate and reset;

[0074] During the resetting process of the polygonal connecting part 19 and the delayed grinding disk 29, there will still be relative rotation between the energy storage ring 27 and the delayed grinding disk 29, and the energy storage coil spring 28 will still have elastic deformation. However, after the delayed grinding disk 29 approaches the adsorption magnetic ring 26, it will be disengaged from the inner mold 10 again under the adsorption of the adsorption magnetic ring 26, and the deformation of the energy storage coil spring 28 will be restored through its own free rotation.

[0075] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0076] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A stamping device for a microphone metal housing, characterized in that: The invention comprises a reciprocating punching and expanding mechanism (1), a delayed rotary grinding mechanism (2), a reciprocating loading and unloading mechanism (3) and a frame assembly (4), wherein the frame assembly (4) comprises a main body bottom plate (37) and a main body vertical plate (38), wherein the main body vertical plate (38) is arranged on the main body bottom plate (37), the reciprocating punching and expanding mechanism (1) is arranged on the main body vertical plate (38), the delayed rotary grinding mechanism (2) is rotatably arranged on the main body vertical plate (38), and the reciprocating loading and unloading mechanism (3) is slidably arranged on the main body bottom plate (37); The reciprocating stamping and expanding mechanism (1) comprises a stamping drive assembly (5), a stamping die assembly (6) and a rotary transmission assembly (7), wherein the stamping drive assembly (5) is arranged on a main body vertical plate (38), the stamping die assembly (6) is arranged on the stamping drive assembly (5), and the rotary transmission assembly (7) is rotatably arranged in the main body vertical plate (38); The stamping drive assembly (5) comprises a stamping electric push rod (8) and a mold push plate (9), wherein the stamping electric push rod (8) is fixedly connected to the side of the main body vertical plate (38), and the mold push plate (9) is fixedly connected to the telescopic rod of the stamping electric push rod (8), and the mold push plate (9) is provided with a flange portion (16); The stamping die assembly (6) comprises an inner die (10), an outer die (11) and a workpiece body (12); the inner die (10) is fixedly connected to a die push plate (9); the outer ring of the inner die (10) is evenly distributed with latching teeth (17); the outer die (11) is arranged on a reciprocating loading and unloading mechanism (3); a rotating latch seat (18) is provided at the end of the outer die (11); and the workpiece body (12) is arranged between the inner die (10) and the outer die (11); The rotary transmission assembly (7) comprises a rotary threaded rod (13), a driving screw block (14) and a synchronous grinding disc (15); a central circular hole (41) is provided on the main body vertical plate (38); the rotary threaded rod (13) is rotatably arranged in the central circular hole (41); one end of the rotary threaded rod (13) is provided with a polygonal connecting portion (19); the driving screw block (14) is fixedly connected to the inside of the inner mold (10); the rotary threaded rod (13) and the driving screw block (14) are connected by threaded transmission; the synchronous grinding disc (15) is rotatably arranged in the rotary clamping seat (18); the synchronous grinding disc (15) is provided with a polygonal sleeve portion (20) matching the polygonal connecting portion (19); the polygonal connecting portion (19) is slidably arranged in the polygonal sleeve portion (20) in a snap-fitting manner.

2. The punching device for a microphone metal housing according to claim 1, characterized in that: The delayed rotation polishing mechanism (2) comprises a pre-rotation energy storage component (21) and a delayed rotation component (22); the pre-rotation energy storage component (21) is rotatably disposed on a main body vertical plate (38); and the delayed rotation component (22) is slidably disposed on the pre-rotation energy storage component (21).

3. The punching device for a microphone metal housing according to claim 2, characterized in that: The pre-rotation energy storage assembly (21) comprises a driving gear (23), a transfer gear shaft (24), an energy storage gear ring (25) and an adsorption magnetic ring (26); the driving gear (23) is engaged with the other end of the rotating threaded rod (13); a top circular hole (42) is further provided on the main body vertical plate (38); the transfer gear shaft (24) is rotatably arranged in the top circular hole (42); one end of the transfer gear shaft (24) is meshed with the driving gear (23) for transmission; the energy storage gear ring (25) is rotatably arranged on the side of the main body vertical plate (38); the other end of the transfer gear shaft (24) is meshed with the energy storage gear ring (25) for transmission; and a transverse sliding rod (31) is symmetrically provided on the energy storage gear ring (25).

4. The punching device for a microphone metal housing according to claim 3, characterized in that: The delayed rotation assembly (22) comprises an energy storage ring (27), an energy storage coil spring (28), a delayed grinding disc (29) and a locking spring (30); the energy storage ring (27) is symmetrically provided with sliding ears (43); the energy storage ring (27) is slidably arranged on a transverse sliding rod (31) by engaging with the sliding ears (43); the energy storage coil spring (28) is arranged between the energy storage ring (27) and the delayed grinding disc (29); the delayed grinding disc (29) is slidably arranged on an inner mold (10); a second locking tooth portion (32) cooperating with a first locking tooth portion (17) is evenly distributed in an annular shape inside the delayed grinding disc (29); and the locking spring (30) is arranged between the delayed grinding disc (29) and the flange portion (16).

5. The punching device for a microphone metal housing according to claim 4, characterized in that: The adsorption magnetic ring (26) is fixedly connected to the energy storage coil spring (28), and a magnetic adsorption force exists between the adsorption magnetic ring (26) and the delayed grinding disc (29).

6. The punching device for a microphone metal housing according to claim 5, characterized in that: The main body bottom plate (37) is provided with a middle partition plate (39) and a transverse sliding groove (40).

7. The punching device for a microphone metal housing according to claim 6, characterized in that: The reciprocating loading and unloading mechanism (3) comprises a sliding base (33), a mold transverse movement support (34) and a loading and unloading push rod (35); the sliding base (33) is slidably engaged in the transverse movement slot (40); a mounting base (36) is provided on the sliding base (33); the outer mold (11) is engaged in the mounting base (36); the outer mold (11) and the sliding base (33) are fixedly connected; the mold transverse movement support (34) is provided on the main body bottom plate (37); the outer mold (11) is placed on the mold transverse movement support (34); the outer mold (11) and the mold transverse movement support (34) are in sliding contact; the fixed end of the loading and unloading push rod (35) is provided on the middle partition plate (39); and the telescopic end of the loading and unloading push rod (35) is provided on the sliding base (33).

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