Strip material die of nut plate progressive die

Abstract

The utility model discloses a strip material die of a nut plate progressive die, which belongs to the technical field of dies, and comprises a lower die structure and an upper die structure, the lower die structure comprises a lower die holder, the top of the lower die holder is sequentially provided with a lower backing plate, a lower die plate, a lower guide plate and a concave die panel, and the upper die structure comprises an upper die holder. An upper base plate and an upper die plate are sequentially arranged at the bottom of the upper die base; a cutting station, a stretching station, an upsetting-extruding station, a punching station, a trimming station, a flanging station and a cutting station are sequentially arranged between the lower die structure and the upper die structure in the moving direction of the strip material, and a flattening station is arranged between the cutting station and the stretching station. And the machining efficiency and the surface quality are improved.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a strip mold for a continuous mold of nut plate. Background Technology

[0002] In modern industrial production, stamping is widely used in the manufacture of thin sheets and profiles. Traditional progressive die stamping typically involves multiple deformation processes such as cutting, stretching, and upsetting. However, these processes can easily lead to uneven material thickness, low processing efficiency, unstable surface quality, and problems such as scratches or oxide layers. Therefore, there is an urgent need for an improved process that can ensure consistent product thickness while maintaining high processing efficiency and low cost. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, the technical problem to be solved by this utility model is to propose a strip mold that ensures uniform material thickness and improves processing efficiency and surface quality.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] This utility model provides a strip die for a continuous die for a nut plate, including a lower die structure and an upper die structure. The lower die structure includes a lower die base, and a lower pad, a lower template, a lower guide plate and a concave die panel are sequentially arranged on the top of the lower die base. The upper die structure includes an upper die base, and an upper pad and an upper template are sequentially arranged on the bottom of the upper die base.

[0006] The lower die structure and the upper die structure are sequentially provided with a cutting station, a stretching station, an upsetting station, a punching station, a trimming station, a flanging station and a cutting station along the strip movement direction. A flattening station is provided between the cutting station and the stretching station.

[0007] The preferred technical solution of this utility model is that the cutting station is provided in two sets, the cutting station includes a cutting punch and a cutting die, the cutting punch is set on the upper template, and the cutting die is installed on the die panel.

[0008] The preferred technical solution of this utility model is that eight sets of stretching stations are equally spaced, each stretching station includes a stretching die and a stretching punch, the stretching die is set on the upper template, and the stretching punch is set on the die panel.

[0009] The preferred technical solution of this utility model is that the upsetting station is provided in four sets, the upsetting station includes an upsetting die and an upsetting punch, the upsetting die is provided on the upper template, and the upsetting punch is provided on the die panel.

[0010] The preferred technical solution of this utility model is that the punching station is set between the first and second groups of four upsetting stations, the punching station includes a punching punch and a punching die, the punch is set on the upper template, and the punching die is set on the die panel.

[0011] The preferred technical solution of this utility model is that the trimming station includes a trimming punch and a trimming die, the trimming punch is disposed on the upper template, and the trimming die is disposed on the die panel.

[0012] The preferred technical solution of this utility model is that the flanging station includes a flanging punch and a flanging die, the flanging punch is disposed on the upper template, and the flanging die is disposed on the die panel.

[0013] The preferred technical solution of this utility model is that the cutting station includes a cutting punch and a cutting die, the cutting punch is disposed on the upper template, and the cutting die is disposed on the die panel.

[0014] The preferred technical solution of this utility model is that a demolding mechanism is provided on each of the cutting station, stretching station, upsetting station, punching station, trimming station, flanging station, cutting station and flattening station.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This utility model achieves full-process processing from blank to finished product through continuous stations including cutting, flattening, stretching, upsetting, punching, trimming, flanging, and cutting. It reduces material turnover, realizes integrated layout, and achieves continuous and efficient production of high-precision nut plates through multi-station coordination, staged forming, and demolding optimization. It ensures uniform material thickness and improves processing efficiency and surface quality. Attached Figure Description

[0017] Figure 1 This is a front view of the strip die structure provided in a specific embodiment of this utility model;

[0018] Figure 2 This is a side view of the strip die structure provided in a specific embodiment of this utility model;

[0019] Figure 3 This is a schematic diagram of the cutting station structure provided in a specific embodiment of this utility model;

[0020] Figure 4 This is a schematic diagram of the stretching station structure provided in a specific embodiment of this utility model;

[0021] Figure 5This is a schematic diagram of the punching, trimming, flanging, and cutting station structure provided in a specific embodiment of this utility model.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Lower die base; 11. Lower backing plate; 12. Lower template; 13. Lower guide plate; 14. Die face plate; 2. Upper die base; 21. Upper backing plate; 22. Upper template; 23. Flattening station; 3. Cutting station; 31. Cutting punch; 32. Cutting die; 4. Drawing station; 41. Drawing die; 42. Drawing punch; 5. Upsetting station; 51. Upsetting die; 52. Upsetting punch; 6. Punching station; 61. Punching punch; 62. Punching die; 7. Trimming station; 71. Trimming punch; 72. Trimming die; 8. Flanging station; 81. Flanging punch; 82. Flanging die; 9. Cutting station; 91. Cutting punch; 92. Cutting die. Detailed Implementation

[0024] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] A strip die for a continuous die for a nut plate includes a lower die structure and an upper die structure. The lower die structure includes a lower die base 1, and a lower pad plate 11, a lower template 12, a lower guide plate 13 and a concave die panel 14 are sequentially arranged on the top of the lower die base 1. The upper die structure includes an upper die base 2, and an upper pad plate 21 and an upper template 22 are sequentially arranged on the bottom of the upper die base 2.

[0026] The lower die structure and the upper die structure are sequentially provided with a cutting station 3, a stretching station 4, an upsetting station 5, a punching station 6, a trimming station 7, a flanging station 8 and a cutting station 9 along the strip movement direction. A flattening station 23 is provided between the cutting station 3 and the stretching station 4.

[0027] Both the lower and upper die structures are made of high-carbon steel or alloy steel, which has high strength and toughness. The upper die structure is equipped with dies for stretching and upsetting, punches for punching, trimming, flanging and cutting. The lower die is equipped with punches for stretching and upsetting, as well as dies for cutting, trimming, flanging, punching and cutting. The workstations are arranged in sequence according to the strip material's travel direction: cutting → flattening → stretching → upsetting → punching → trimming → flanging → cutting. By optimizing the workstation sequence, the flattening workstation 23 is set between the cutting workstation 3 and the stretching workstation 4, which can eliminate local warping of the strip material after cutting and avoid uneven wall thickness caused by uneven material during stretching. The continuous workstations realize the whole process from blank to finished product, reduce material turnover, realize integrated layout, ensure uniform material thickness, and improve processing efficiency and surface quality.

[0028] As a possible implementation of this solution, preferably, the cutting station 3 is provided in two sets. The cutting station 3 includes a cutting punch 31 and a cutting die 32. The cutting punch 31 is set on the upper template 22, and the cutting die 32 is installed on the die panel 14. By setting two sets of cutting stations 3, material removal is completed in stages, reducing the single punching force and effectively extending the service life of the mold.

[0029] As a possible implementation of this solution, preferably, the stretching station 4 is arranged in eight groups at equal intervals. The stretching station 4 includes a stretching die 41 and a stretching punch 42. The stretching die 41 is set on the upper template 22, and the stretching punch 42 is set on the die panel 14. By gradually increasing the depth through eight stretching operations, the material breakage caused by one-time molding can be effectively avoided. The eighth stretching station 4 plays a shaping role, which aims to eliminate the elastic deformation of the previous stretching and reduce tolerance.

[0030] As a possible implementation of this solution, preferably, the upsetting station 5 is provided with four sets. The upsetting station 5 includes an upsetting die 51 and an upsetting punch 52. The upsetting die 51 is set on the upper template 22, and the upsetting punch 52 is set on the die panel 14. By gradually extruding the material through multiple stations, it is possible to effectively avoid the die chipping caused by excessive upsetting force in a single operation.

[0031] As a possible implementation of this solution, preferably, the punching station 6 is located between the first and second groups of the four upsetting stations 5. The punching station 6 includes a punching punch 61 and a punching die 62. The punching punch 61 is located on the upper template 22, and the punching die 62 is located on the die panel 14. By adding punching in the multiple upsetting stations 5, the material hardening effect generated by upsetting can be used to improve the hole wall strength. Moreover, after punching, the subsequent upsetting stations 5 can correct the slight deviation of the hole position caused by material flow.

[0032] As a possible implementation of this solution, preferably, the trimming station 7 includes a trimming punch 71 and a trimming die 72, the trimming punch 71 being disposed on the upper template 22, and the trimming die 72 being disposed on the die panel 14. The flanging station 8 includes a flanging punch 81 and a flanging die 82, the flanging punch 81 being disposed on the upper template 22, and the flanging die 82 being disposed on the die panel 14. The cutting station 9 includes a cutting punch 91 and a cutting die 92, the cutting punch 91 being disposed on the upper template 22, and the cutting die 92 being disposed on the die panel 14.

[0033] The trimming station 7 ensures the smoothness of the edge before flanging, prevents flanging cracks, and cuts off immediately after flanging, which can improve the cross-sectional quality by utilizing the stability of the material after plastic deformation.

[0034] As a possible implementation of this solution, preferably, the cutting station 3, stretching station 4, upsetting station 5, punching station 6, trimming station 7, flanging station 8, cutting station 9 and flattening station 23 are all equipped with demolding mechanisms. The demolding mechanisms can adopt nitrogen spring ejection devices. The demolding mechanisms can prevent the strip material from sticking to the mold locally, which would cause the feeding to get stuck. The spring ejection force is configured differently according to the demolding force requirements of different stations.

[0035] This utility model has been described through preferred embodiments. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. This utility model is not limited to the specific embodiments disclosed herein; other embodiments falling within the scope of the claims of this application are all within the protection scope of this utility model.

Claims

1. A strip die for a nut plate progressive die, characterized by: The mold includes a lower mold structure and an upper mold structure. The lower mold structure includes a lower mold base (1), and the top of the lower mold base (1) is provided with a lower pad (11), a lower template (12), a lower guide plate (13) and a cavity mold panel (14). The upper mold structure includes an upper mold base (2), and the bottom of the upper mold base (2) is provided with an upper pad (21) and an upper template (22). The lower die structure and the upper die structure are sequentially provided with a cutting station (3), a stretching station (4), an upsetting station (5), a punching station (6), a trimming station (7), a flanging station (8) and a cutting station (9) along the strip movement direction. A flattening station (23) is provided between the cutting station (3) and the stretching station (4).

2. The strip die for a continuous die for a nut plate according to claim 1, characterized in that: The cutting station (3) is provided in two sets. The cutting station (3) includes a cutting punch (31) and a cutting die (32). The cutting punch (31) is set on the upper template (22), and the cutting die (32) is installed on the die panel (14).

3. The strip die for a continuous die for a nut plate according to claim 1, characterized in that: The stretching station (4) is provided with eight sets of equal spacing. The stretching station (4) includes a stretching die (41) and a stretching punch (42). The stretching die (41) is set on the upper template (22), and the stretching punch (42) is set on the die panel (14).

4. The strip die for a continuous die for a nut plate according to claim 1, characterized in that: The upsetting station (5) is provided with four sets. The upsetting station (5) includes an upsetting die (51) and an upsetting punch (52). The upsetting die (51) is set on the upper template (22), and the upsetting punch (52) is set on the die panel (14).

5. The strip die for a continuous die for a nut plate according to claim 1, characterized in that: The punching station (6) is located between the first and second groups of the four upsetting stations (5). The punching station (6) includes a punching punch (61) and a punching die (62). The punching punch (61) is located on the upper template (22), and the punching die (62) is located on the die panel (14).

6. The strip die for a continuous die for a nut plate according to claim 1, characterized in that: The trimming station (7) includes a trimming punch (71) and a trimming die (72). The trimming punch (71) is set on the upper template (22), and the trimming die (72) is set on the die panel (14).

7. The strip die for a continuous die for a nut plate according to claim 1, characterized in that: The flanging station (8) includes a flanging punch (81) and a flanging die (82). The flanging punch (81) is set on the upper template (22), and the flanging die (82) is set on the die panel (14).

8. The strip die for a continuous die for a nut plate according to claim 1, characterized in that: The cutting station (9) includes a cutting punch (91) and a cutting die (92). The cutting punch (91) is set on the upper template (22), and the cutting die (92) is set on the die panel (14).

9. The strip die for a continuous die for a nut plate according to claim 1, characterized in that: Demolding mechanisms are provided at the cutting station (3), stretching station (4), upsetting station (5), punching station (6), trimming station (7), flanging station (8), cutting station (9) and flattening station (23).

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