Punching equipment
By combining roughing and fine stamping dies, the problem of surface indentation on stamped keyboards was solved, resulting in cost reduction, enhanced competitiveness, extended die life, and simplified production process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FU TAI HUA IND SHENZHEN
- Filing Date
- 2025-04-11
- Publication Date
- 2026-04-14
AI Technical Summary
Indentations appear on the surface of stamped keyboards, leading to increased production costs and reduced product competitiveness. Existing technology solves this problem by applying a protective film before stamping, but this increases production steps and costs.
A combination of roughing and fine stamping dies is used. The roughing die is used for the roughing process of the keyboard, and the fine stamping die is used for the fine stamping process. By setting the contouring protrusion and the blanking protrusion of the first and second stamping parts, the generation of indentations is reduced, the die-attachment process is eliminated, and the strength and service life of the die are improved.
It effectively reduces or even avoids the formation of indentations, lowers production costs, enhances product competitiveness, extends mold life, and simplifies the production process.
Smart Images
Figure CN224114946U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of stamping technology, and more particularly to a stamping device. Background Technology
[0002] During the mass production of keyboard products, some stamped keyboards will have indentations on their surface. Through analysis of the trend of keyboard product changes throughout the entire process, it can be determined that the indentations on the surface of the stamped keyboards are mainly generated after the product pressing process in the mold stamping process.
[0003] To address the aforementioned indentations, a protective film is typically applied to the surface of the keyboard product before die stamping to reduce indentations generated during the pressing process. This ensures that the finished stamped keyboard product is free of defects and indentations. However, applying a protective film increases the number of production steps, raises production costs, and reduces product competitiveness. Utility Model Content
[0004] In view of this, this application provides a stamping equipment that can reduce or even avoid the generation of indentations, reduce production costs, and improve product competitiveness.
[0005] In a first aspect, this application provides a stamping apparatus for stamping a keyboard, the keyboard having a key area; the stamping apparatus includes a roughing die and a fine stamping die; the roughing die includes a roughing die assembly and a first stationary die assembly disposed opposite to each other, at least a portion of the roughing die assembly being configured to move toward or away from the first stationary die assembly; the roughing die assembly has a first stamping portion and a first contouring protrusion, the first stamping portion protruding from the surface of the roughing die assembly facing the first stationary die assembly; the first contouring protrusion is disposed on the outer periphery of the first stamping portion; the first stamping portion has a plurality of first stamping through holes extending along the stamping direction of the stamping apparatus, at least a portion of the edges of the first stamping through holes having pressure protrusions, and extending along the stamping direction... In the stamping direction of the equipment, the first contouring protrusion is not higher than the surface of the first stamping part facing the first stationary die assembly; the fine blanking die includes a fine blanking die assembly and a second stationary die assembly, at least a portion of the fine blanking die assembly is configured to move toward or away from the second stationary die assembly; the fine blanking die assembly has a second stamping part and a second contouring protrusion, the second stamping part protruding from the surface of the fine blanking die assembly facing the second stationary die assembly; the second contouring protrusion is disposed on the outer periphery of the second stamping part, and along the stamping direction of the stamping equipment, the second contouring protrusion is not higher than the surface of the second stamping part facing the second stationary die assembly; the second stamping part has a plurality of second stamping through holes extending along the stamping direction of the stamping equipment.
[0006] In the above scheme, the roughing die is used for the roughing process of the keyboard, and the fine blanking die is used for the fine blanking process after the roughing process. The roughing process uses the blanking protrusion on the edge of the first stamping through hole to complete the blanking process. The contact area between the blanking protrusion and the keyboard is small, which can reduce the number of indentations generated by the blanking protrusion on the keyboard in the roughing process. At the same time, due to the blanking allowance set in the stamping process, the indentations generated by the blanking protrusion in the roughing process are close to the edge of the keyboard hole. This part of the indentation will be cut off in the subsequent fine blanking process, thus obtaining a keyboard product with few or even no indentations. This solves the indentation problem, eliminates the need for a die-applied process during stamping, significantly reduces production costs, and enhances competitiveness. The inclusion of a first contouring protrusion in the rough stamping die and a second contouring protrusion in the fine stamping die increases the strength of the first and second stamping parts, reduces deformation during stamping, and extends the die's service life. Furthermore, the height limitation of the first and second stamping parts reduces or even eliminates their contact with the keyboard during stamping, thus reducing or eliminating indentations on the keyboard.
[0007] In some embodiments, the projection of the first contoured protrusion along the stamping direction of the stamping device and the projection of the second contoured protrusion along the stamping direction of the stamping device fall within the key area of the keyboard, and the outer edges of the projections of the first contoured protrusion and the second contoured protrusion do not overlap with the outer edge of the key area.
[0008] By setting the outer edges of the first and second contoured protrusions away from the outer edges of the key area, the contact between the two protrusions and the keyboard during the stamping process can be further reduced, and the indentation of the first and second contoured protrusions on the keyboard can be further reduced or even avoided.
[0009] In some embodiments, the distance between the outer edge of the projection of at least one of the first contoured protrusion and the second contoured protrusion onto the key area of the keyboard and the outer edge of the key area is 0.45mm to 0.55mm.
[0010] After the keyboard is fed to the designated station, there will be a certain deviation between the actual placement position and the preset placement position. By controlling the horizontal distance between the outer edge of the projection of the first stamping part and the second contouring protrusion and the outer edge of the key area within the above range, the contact between the first stamping part and the second stamping part and the keyboard during the stamping process can still be reduced or even avoided when the actual placement position of the keyboard deviates from the preset placement position.
[0011] In some embodiments, the pressure protrusion has a rectangular groove on its surface facing the first stationary mold module.
[0012] The roughing die is used for the roughing process. The rectangular groove can reduce the contact area of the pressure protrusion, thereby reducing the number of indentations produced by the pressure protrusion on the keyboard.
[0013] In some embodiments, the width of the pressing protrusion is 0.45mm to 0.55mm, and the depth of the rectangular groove is 0.15mm to 0.25mm.
[0014] The parameters of the pressure protrusion are controlled within the above range to ensure that the pressure protrusion can press the material stably, while further reducing the number of indentations produced by the pressure protrusion on the keyboard.
[0015] In some embodiments, the pressure protrusion has an arc-shaped groove on its surface facing the first stationary mold module.
[0016] The roughing die is used for the roughing process. The arc groove can reduce the contact area of the pressure protrusion, thereby reducing the number of indentations produced by the pressure protrusion on the keyboard.
[0017] In some embodiments, the width of the pressing protrusion is 0.05mm to 0.15mm, and the maximum depth of the arcuate groove is 0.10mm to 0.20mm.
[0018] The parameters of the pressure protrusion are controlled within the above range to ensure that the pressure protrusion can press the material stably, while further reducing the number of indentations produced by the pressure protrusion on the keyboard.
[0019] In some embodiments, at least one of the first contouring protrusion and the second contouring protrusion has an outer surface including an R-angle with a radius of 0.15 mm to 0.25 mm.
[0020] The R-angle includes a rounded corner, which can effectively disperse stress concentration and enhance the strength of the first and second contoured protrusions.
[0021] In some embodiments, the keyboard limit height of the stamping equipment is 1.68mm to 1.78mm.
[0022] There will be some thickness error in the production of keyboards. The limit height of the keyboard is within the above range, which can improve the pressing stability of keyboards of different thicknesses and ensure the normal operation of the stamping process.
[0023] In some embodiments, the roughing die includes a first die and a second die, the first die being used for a first roughing process and the second die being used for a second roughing process, and each of the first die and the second die includes a roughing module and a first stationary die module disposed opposite to each other;
[0024] The roughing die of the first mold includes a first roughing die plate, the roughing die of the second mold includes a second roughing die plate, and the fine blanking die includes a fine blanking die plate. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the roughing die for the stamping equipment provided in this application.
[0026] Figure 2 for Figure 1 The diagram shows the structure of the roughing die of the stamping equipment.
[0027] Figure 3 for Figure 1 A cross-sectional view of the roughing die of the stamping equipment shown.
[0028] Figure 4 for Figure 3 Enlarged view of point A in the middle.
[0029] Figure 5 for Figure 1 A partial cross-sectional view of the roughing die and keyboard of the stamping equipment shown.
[0030] Figure 6 for Figure 1 The diagram shows a cross-sectional view of a pressing protrusion in a stamping device.
[0031] Figure 7 for Figure 1 A cross-sectional view of another pressing protrusion of the stamping equipment shown.
[0032] Figure 8 This is a schematic diagram of the fine blanking die for the stamping equipment provided in this application.
[0033] Figure 9 for Figure 8 The diagram shows the structure of the fine blanking template for the stamping equipment.
[0034] Figure 10 for Figure 8 A partial sectional view of the fine blanking template and keyboard of the stamping equipment shown.
[0035] Explanation of key component symbols:
[0036] 1. Rough stamping die;
[0037] 11. Rough stamping die; 111. First stamping part; 1111. First stamping through hole; 112. First contouring protrusion; 113. Blanking protrusion; 1131. Rectangular groove; 1132. Arc groove; 114. Rough stamping die plate; 12. First stationary die assembly;
[0038] 2. Fine stamping dies;
[0039] 21. Fine blanking module; 211. Second stamping section; 2111. Second stamping through hole; 212. Second contouring protrusion; 213. Fine blanking template; 22. Second stationary die module;
[0040] 10. Keyboard;
[0041] 101. Button area; 102. Curved surface structure. Detailed Implementation
[0042] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.
[0043] During the mass production of keyboard products, some stamped keyboards will have indentations on their surface. Through analysis of the trend of keyboard product changes throughout the entire process, it can be determined that the indentations on the surface of the stamped keyboards are mainly generated after the product pressing process in the mold stamping process.
[0044] To address the aforementioned indentations, a protective film is typically applied to the surface of the keyboard product before die stamping to reduce indentations generated during the pressing process. This ensures that the finished stamped keyboard product is free of defects and indentations. However, applying a protective film increases the number of production steps, raises production costs, and reduces product competitiveness.
[0045] In view of this, this application provides a stamping device for stamping a keyboard 10, the keyboard 10 having a key area 101; the stamping device includes a rough stamping die 1 and a fine stamping die 2; please refer to Figures 1-10The roughing die 1 includes a roughing die assembly 11 and a first stationary die assembly 12 disposed opposite to each other. At least a portion of the roughing die assembly 11 is configured to move toward or away from the first stationary die assembly 12. The roughing die assembly 11 is provided with a first stamping portion 111 and a first contouring protrusion 112. The first stamping portion 111 protrudes from the surface of the roughing die assembly 11 facing the first stationary die assembly 12. The first contouring protrusion 112 is disposed on the outer periphery of the first stamping portion 111. The first stamping portion 111 is provided with a plurality of first stamping through holes 1111 extending along the stamping direction of the stamping equipment. At least a portion of the edge of the first stamping through holes 1111 is provided with a pressure protrusion 113, and along the stamping direction of the stamping equipment, the first contouring protrusion 112 is not higher than the first stamping portion 111. 1. A surface facing the first stationary die module 12 is provided; the fine blanking die 2 includes a fine blanking module 21 and a second stationary die module 22, at least a portion of the fine blanking module 21 is configured to move toward or away from the second stationary die module 22; the fine blanking module 21 is provided with a second stamping portion 211 and a second contouring protrusion 212, the second stamping portion 211 protrudes from the surface of the fine blanking module 21 facing the second stationary die module 22; the second contouring protrusion 212 is provided on the outer periphery of the second stamping portion 211, and along the stamping direction of the stamping equipment, the second contouring protrusion 212 is not higher than the surface of the second stamping portion 211 facing the second stationary die module 22; the second stamping portion 211 is provided with a plurality of second stamping through holes 2111 that extend along the stamping direction of the stamping equipment.
[0046] In the above scheme, the rough stamping die 1 is used for the rough stamping process of the keyboard 10, and the fine stamping die 2 is used for the fine stamping process after the rough stamping process. The rough stamping process uses the pressing protrusion 113 on the edge of the first stamping through hole 1111 to complete the pressing process. The contact area between the pressing protrusion 113 and the keyboard 10 is small, which can reduce the number of indentations generated by the pressing protrusion 113 on the keyboard 10 in the rough stamping process. At the same time, due to the setting of the blanking allowance in the stamping process, the indentations generated by the pressing protrusion 113 in the rough stamping process are close to the edge of the keyboard hole. This part of the indentation will be cut off in the subsequent fine stamping process, thereby obtaining a finished keyboard 10 with fewer or even no indentations, thus solving the problem of indentation. To address the issue of indentations, the stamping process can eliminate the mold application process, significantly reducing production costs and enhancing competitiveness. The inclusion of the first contouring protrusion 112 in the rough stamping die 1 and the second contouring protrusion 212 in the fine stamping die 2 can improve the strength of the first stamping part 111 and the second stamping part 211, reduce their deformation during the stamping process, and extend the service life of the die. Furthermore, the height limitation of the first stamping part 111 and the second stamping part 211 can reduce or even avoid their contact with the keyboard 10 during the stamping process, thereby reducing or even avoiding indentations on the keyboard 10.
[0047] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the embodiments and features described below can be combined with each other.
[0048] In some embodiments, the stamping of the keyboard 10 is accomplished by the cooperation of a roughing die 1 and a fine stamping die 2 on a stamping equipment. The specific stamping process includes a first roughing process, a second roughing process, and a fine stamping process. The first and second roughing processes are the initial forming processes of the keyboard 10, i.e., quickly cutting a near-final shape but with lower precision keyboard 10 from a large metal sheet. The fine stamping process further refines the keyboard 10 after the first and second roughing processes, ensuring that the dimensional accuracy and surface quality of the final keyboard 10 meet the design requirements. Please refer to [reference to previous text] in this application. Figure 5 The finished keyboard 10 has a key area 101 with multiple keyboard holes for arranging keys, and the edge area of the key area 101 has an arc surface structure 102.
[0049] It should be noted that, in order to ensure the accuracy and quality of the final keyboard holes, the first and second roughing processes in this application require a relatively large blanking allowance, while the fine blanking process requires a smaller blanking allowance. This application does not limit the blanking allowances for the first, second, and fine blanking processes; they can be selected according to the material and specifications of the keyboard 10. Optionally, the blanking allowances for the first and second roughing processes can be 8mm to 10mm, and the blanking allowance for the fine blanking process can be 0.15mm to 0.25mm. It is understood that keeping the blanking allowances within the above range can avoid various deformations or errors that may occur during the blanking process and meet production requirements.
[0050] The stamping equipment specifically includes a roughing die 1 and a fine stamping die 2. The roughing die 1 is used for the two roughing processes of the keyboard 10, and the fine stamping die 2 is used for the fine stamping process of the keyboard 10.
[0051] In some embodiments, the roughing die 1 is specifically used for the first roughing process and the second roughing process. The roughing die 1 includes a roughing module 11 and a first stationary die module 12. At least a portion of the roughing module 11 is configured to move toward or away from the first stationary die module 12. This application does not limit the relative movement direction of the roughing module 11 and the first stationary die module 12. For example, it can be a vertical movement or a horizontal movement, which can be selected according to actual needs. Optionally, the roughing die 1 of this application has a vertical stamping movement, wherein the roughing module 11 is an upper die and the first stationary die module 12 is a lower die.
[0052] It should be noted that the stamping direction of the stamping equipment in this application is the direction in which the upper die and the lower die move relative to each other.
[0053] Furthermore, the first rough stamping process and the second rough stamping process of this application use different rough stamping dies 1, namely the first die and the second die. The first die is used for the first rough stamping process, and the second die is used for the second rough stamping process. Each of the first die and the second die includes a rough stamping module 11 and a first stationary die module 12 arranged opposite to each other. The rough stamping module 11 used in the rough stamping process includes a rough stamping template 114. More specifically, the rough stamping module 11 used in the first rough stamping process includes a first rough stamping template, and the rough stamping module 11 used in the second rough stamping process includes a second rough stamping template. Both are sheet metal parts that are close to the first stationary die module 12 along the stamping direction of the rough stamping module 11.
[0054] Please continue to refer to Figures 2-4 The roughing die 11 has a first stamping part 111 on the surface facing the first stationary die 12, that is, the roughing die 114 has a first stamping part 111. The first stamping part 111 protrudes from the surface of the roughing die 114 facing the first stationary die 12. In other words, the first stamping part 111 is a platform protruding from the surface of the roughing die 114 facing the first stationary die 12. The first stamping part 111 has a plurality of first stamping through holes 1111 that pass through along the stamping direction of the stamping equipment. The first stamping through holes 1111 are used to locate the positions where some keyboard holes need to be opened on the keyboard 10. This application does not limit the height and area of the first stamping part 111 or the size of the first stamping through holes 1111. They can be set according to the actual specifications of the keyboard 10.
[0055] At least a portion of the edges of the first stamping through hole 1111 are provided with pressure protrusions 113. The pressure protrusions 113 are used for pressure during the first and second rough stamping processes. In this application, the pressure protrusions 113 are generally rectangular protrusions. During the stamping process, the rectangular protrusions can make small-area contact with the keyboard 10 to reduce the number of indentations generated by the pressure protrusions 113 on the keyboard 10 during the rough stamping process. Optionally, all edges of the first stamping through hole 1111 are provided with pressure protrusions 113.
[0056] It should be noted that the magnitude and distribution of the pressing force of the pressing protrusion 113 during the pressing process can be selected according to production needs. While ensuring stable pressing, it is possible to reduce the generation of indentations on the keyboard 10.
[0057] It should also be noted that the pressure protrusion 113 of this application can be a continuous structure surrounding the first stamping through hole 1111, or it can be a segmented structure surrounding the first stamping through hole 1111, that is, the pressure protrusion 113 is composed of multiple segments. It is understood that when the pressure protrusion 113 is a continuous structure, it has higher strength and can play a better pressure role; when the pressure protrusion 113 is a segmented structure, the manufacturing cost of the pressure protrusion 113 can be reduced. The choice can be made according to actual needs and is not limited here. Optionally, the pressure protrusion 113 of this application is a continuous structure surrounding the first stamping through hole 1111.
[0058] The size and shape of the blank holder protrusion 113 used in the first and second rough punches of this application are different. Specifically:
[0059] In the first roughing process, the width of the pressure protrusion 113 on the first roughing die is 0.45mm to 0.55mm. Optionally, the width of the pressure protrusion 113 on the first roughing die can be 0.45mm, 0.47mm, 0.49mm, 0.51mm, 0.53mm, and 0.55mm, or other values within this range, and can be selected according to actual needs. It is understood that the first roughing process is the initial stamping process. With the width of the pressure protrusion 113 on the first roughing die within the above range, the contact area between the pressure protrusion 113 and the keyboard 10 is large, which can improve the stability of the pressure.
[0060] For further details, please refer to Figure 6 In some embodiments, the blanking protrusion 113 on the first roughing die has a rectangular groove 1131. The rectangular groove 1131 is located on the surface of the blanking protrusion 113 near the first stationary die assembly 12, and the depth of the rectangular groove 1131 is 0.15mm~0.25mm. Optionally, the depth of the rectangular groove 1131 can be 0.15mm, 0.17mm, 0.19mm, 0.21mm, 0.23mm, and 0.25mm, or other values within the range, which can be selected according to actual needs. It is understood that after the rectangular groove 1131 is formed on the surface of the blanking protrusion 113 near the first stationary die assembly 12, and the depth of the rectangular groove 1131 is within the above range, its contact area with the keyboard 10 is reduced. This ensures that the blanking protrusion 113 can stably press the blank while reducing the number of indentations generated by the blanking protrusion 113 on the keyboard 10 during the first roughing process.
[0061] The width of the blanking protrusion 113 on the second roughing die used in the second roughing process is 0.05mm to 0.15mm. Optionally, the width of the blanking protrusion 113 on the second roughing die can be 0.05mm, 0.07mm, 0.09mm, 0.11mm, 0.13mm, and 0.15mm, or other values within this range, and can be selected according to actual needs. It is understood that the second roughing process is the second stamping process, and the width of the blanking protrusion 113 on the second roughing die within the above range can reduce the formation of indentations during the blanking process.
[0062] For further details, please refer to Figure 7 In some embodiments, the blanking protrusion 113 on the second roughing die has an arc-shaped groove 1132. The arc-shaped groove 1132 is located on the surface of the blanking protrusion 113 near the first stationary die assembly 12, and the maximum depth of the arc-shaped groove 1132 is 0.10mm~0.20mm. Optionally, the maximum depth of the arc-shaped groove 1132 can be 0.10mm, 0.12mm, 0.14mm, 0.16mm, 0.18mm, and 0.20mm, or other values within the range, which can be selected according to actual needs. It can be understood that after the arc-shaped groove 1132 is formed on the surface of the blanking protrusion 113 near the first stationary die assembly 12, and the maximum depth of the arc-shaped groove 1132 is within the above range, its contact with the keyboard 10 changes from surface contact to line contact, which can further reduce or even avoid the blanking protrusion 113 from producing indentations on the keyboard 10 during the second roughing process.
[0063] In some implementation methods, please continue to refer to Figure 8 The fine blanking process utilizes a fine blanking die 2 comprising a fine blanking module 21 and a second stationary die module 22. At least a portion of the fine blanking module 21 is configured to move toward or away from the second stationary die module 22. This application does not limit the relative movement direction of the fine blanking module 21 and the second stationary die module 22; for example, it can be a vertical movement or a horizontal movement, which can be selected according to actual needs. Optionally, the die in this application involves vertical stamping movement, wherein the fine blanking module 21 is the upper die and the second stationary die module 22 is the lower die.
[0064] Please refer to Figure 9 and Figure 10The fine blanking module 21 is provided with a second stamping part 211. The fine blanking module 21 includes a fine blanking template 213. The second stamping part 211 protrudes from the surface of the fine blanking template 213 facing the second stationary mold module 22. That is, the second stamping part 211 is a platform protruding from the surface of the fine blanking template 213 facing the second stationary mold module 22. The second stamping part 211 has a plurality of second stamping through holes 2111 that pass through along the stamping direction of the stamping equipment. The second stamping through holes 2111 are used to locate the positions where another part of the keyboard holes need to be opened on the keyboard 10. This application does not limit the height and area of the second stamping part 211 or the size of the second stamping through holes 2111. They can be set according to the actual specifications of the keyboard 10.
[0065] Understandably, unlike the roughing die 114, the fine die 213 does not have a pressure protrusion 113.
[0066] It should be noted that after the keyboard 10 undergoes fine blanking, due to the setting of the blanking allowance and the fact that the pressure protrusion 113 is located at the edge of the second stamping through hole 2111, as the blanking process proceeds, the second stamping through hole 2111 reaches the preset size. The indentations produced by the pressure protrusion 113 in the first and second rough blanking processes will be cut off. As a result, after fine blanking, the indentations produced by the pressure protrusion 113 on the keyboard 10 are few or even non-existent, which can meet the production requirements.
[0067] In some embodiments, a first contouring protrusion 112 is provided on the outer periphery of the first stamping portion 111 of the roughing die 1. The first contouring protrusion 112 connects the outer periphery of the first stamping portion 111 with the surface of the roughing die 11 near the first stationary die 12. Along the stamping direction of the stamping equipment, the first contouring protrusion 112 is not higher than the surface of the first stamping portion 111 near the first stationary die 12. A second contouring protrusion 212 is provided on the outer periphery of the second stamping portion 211 of the fine stamping die 2. The second contouring protrusion 212 connects the outer periphery of the second stamping portion 211 with the surface of the fine stamping die 21 near the second stationary die 22. Along the stamping direction of the stamping equipment, the second contouring protrusion 212 is not higher than the surface of the second stamping portion 211 near the second stationary die 22. Understandably, the first stamping part 111 and the second stamping part 211 are rectangular raised platforms, which tend to deform in all directions during the stamping process. The first contouring protrusion 112 and the second contouring protrusion 212 are respectively provided on the outer periphery of the first stamping part 111 and the second stamping part 211 to strengthen the strength of the first stamping part 111 and the second stamping part 211. This can reduce or even avoid the deformation of the first stamping part 111 and the second stamping part 211 during the stamping process, and extend the service life of the mold. In addition, the height limitation of the first stamping part 111 and the second stamping part 211 can reduce or even avoid the contact between the first stamping part 111 and the second stamping part 211 and the keyboard 10 during the stamping process. That is, the first contouring protrusion 112 and the second contouring protrusion 212 are suspended during the stamping process, which can prevent the first stamping part 111 and the second stamping part 211 from making indentations on the keyboard 10.
[0068] The first contoured protrusion 112 and the second contoured protrusion 212 used in this application are R-angle structures with a radius of 0.15mm to 0.25mm. Specifically, they can be 0.15mm, 0.17mm, 0.19mm, 0.21mm, 0.23mm and 0.25mm, or other values within the range, which can be selected according to actual needs. Understandably, the first contouring protrusion 112 is used to connect the side of the first stamping part 111 with the surface of the rough stamping die 11 facing the first stationary die 12, and the R-angle structure of the first contouring protrusion 112 adopts an arc transition, that is, the first contouring protrusion 112 is a three-dimensional protrusion structure, namely a 3DR corner structure. The 3DR corner structure can effectively disperse the stress transmitted between the first stamping part 111 and the second stamping part 211, reduce stress concentration, and enhance the strength of the first contouring protrusion 112 and the second contouring protrusion 212. Furthermore, as the distance between the 3DR corner structure and the first contouring protrusion 112 or the second contouring protrusion 212 increases, the height of the 3DR corner structure gradually decreases, which can effectively reduce the contact between the 3DR corner structure and the keyboard 10 during the stamping process.
[0069] It should be noted that the first contouring protrusion 112 of this application can be a continuous structure surrounding the first stamping portion 111, or it can be a segmented structure surrounding the first stamping portion 111, that is, the first contouring protrusion 112 is composed of multiple segments. It is understood that when the first contouring protrusion 112 is a continuous structure, its strength is higher, and it can better protect the first stamping portion 111; when the first contouring protrusion 112 is a segmented structure, the strengthening cost of the first stamping portion 111 can be reduced. The same applies to the second stamping portion 211; the choice can be made according to actual needs and is not limited here. Optionally, the first contouring protrusion 112 of this application is a continuous structure surrounding the first stamping portion 111, and the second contouring protrusion 212 is a continuous structure surrounding the second stamping portion 211.
[0070] For further details, please refer to [link / reference]. Figure 5 and Figure 10 The projections of the first contoured protrusion 112 and the second contoured protrusion 212 along the stamping direction of the stamping equipment fall within the key area 101 of the keyboard 10, and the outer edges of the projections of the first contoured protrusion 112 and the second contoured protrusion 212 do not overlap with the outer edge of the key area 101. It is understandable that setting the outer edges of the first contoured protrusion 112 and the second contoured protrusion 212 away from the outer edge of the key area 101 can further reduce or even avoid contact between the two and the keyboard 10 during the stamping process, thus preventing the first contoured protrusion 112 and the second contoured protrusion 212 from forming indentations on the keyboard 10 during the stamping process.
[0071] Optionally, the horizontal distance between the outer edges of the projections of the first contoured protrusion 112 and the second contoured protrusion 212 and the outer edge of the key area 101 is 0.45mm to 0.55mm, specifically 0.45mm, 0.47mm, 0.49mm, 0.51mm, 0.53mm, and 0.55mm, or other values within this range, can be selected according to actual needs. It is understandable that after the keyboard 10 is fed to the designated station, its actual placement position will deviate somewhat from the preset placement position. By controlling the horizontal distance between the outer edges of the projections of the first contoured protrusion 112 and the second contoured protrusion 212 and the outer edge of the key area 101 within the aforementioned range, even when the actual placement position of the keyboard 10 deviates from the preset placement position, contact between the first contoured protrusion 112 and the second contoured protrusion 212 and the keyboard 10 during the stamping process can still be reduced or even avoided, thus reducing the formation of indentations.
[0072] In some embodiments, the limiting height of the keyboard 10 in either the roughing die 1 or the fine blanking die 2 is 1.68mm to 1.78mm, specifically 1.68mm, 1.70mm, 1.72mm, 1.74mm, 1.76mm, and 1.78mm, or other values within this range, which can be selected according to actual needs. It is understood that the keyboard 10 will have a certain thickness error during the production process. Keeping the limiting height of the keyboard 10 within the above range can improve the pressing stability of the roughing die 1 and the fine blanking die 2 for keyboards 10 of different thicknesses, ensuring the normal operation of the stamping process.
[0073] It should be noted that the first roughing die and the second roughing die used in this application may differ only in the opening position of the first stamping through hole 1111, that is, the stamping process of the keyboard hole is performed in two stages. It is understandable that the first roughing die of the first mold and the second roughing die of the second mold are used for two roughing processes of the keyboard 10, which can avoid the keyboard hole being formed in one stamping, disperse the stamping pressure, and reduce the springback effect.
[0074] Furthermore, those skilled in the art should recognize that the above embodiments are merely illustrative of this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of this application fall within the scope of this application's disclosure.
Claims
1. A stamping apparatus for stamping a keyboard provided with a key area, characterized in that, The stamping device comprises a rough stamping die and a fine stamping die; The rough stamping die comprises a rough stamping die set and a first static die set, at least part of the rough stamping die set is configured to move towards or away from the first static die set, the rough stamping die set is provided with a first stamping part and a first profiling convex part, the first stamping part is protrudingly arranged on the surface of the rough stamping die set facing the first static die set, the first profiling convex part is arranged on the outer periphery of the first stamping part, the first stamping part is provided with a plurality of first stamping through holes penetrating along the stamping direction of the stamping device, at least part of the edge of the first stamping through hole is provided with a material pressing convex part, and along the stamping direction of the stamping device, the first profiling convex part is not higher than the surface of the first stamping part facing the first static die set; The fine stamping die comprises a fine stamping die set and a second static die set, at least part of the fine stamping die set is configured to move towards or away from the second static die set, the fine stamping die set is provided with a second stamping part and a second profiling convex part, the second stamping part is protrudingly arranged on the surface of the fine stamping die set facing the second static die set, the second profiling convex part is arranged on the outer periphery of the second stamping part, and along the stamping direction of the stamping device, the second profiling convex part is not higher than the surface of the second stamping part facing the second static die set; the second stamping part is provided with a plurality of second stamping through holes penetrating along the stamping direction of the stamping device.
2. The stamping apparatus of claim 1, wherein, The projection of the first profiling convex part along the stamping direction of the stamping device and the projection of the second profiling convex part along the stamping direction of the stamping device fall within the key area of the keyboard, and the outer side edge of the projection of the first profiling convex part and the second profiling convex part does not overlap with the outer side edge of the key area.
3. The stamping apparatus of claim 2, wherein, The distance between the outer side edge of the projection of at least one of the first profiling convex part and the second profiling convex part falling within the key area of the keyboard and the outer side edge of the key area is 0.45mm-0.55mm.
4. The stamping apparatus of claim 1, wherein, The surface of the material pressing convex part facing the first static die set is provided with a rectangular groove.
5. The stamping apparatus of claim 4, wherein, The width of the material pressing convex part is 0.45mm-0.55mm, and the depth of the rectangular groove is 0.15mm-0.25mm.
6. The stamping apparatus of claim 1, wherein, The surface of the material pressing convex part facing the first static die set is provided with an arc-shaped groove.
7. The stamping apparatus of claim 6, wherein, The width of the material pressing convex part is 0.05mm-0.15mm, and the maximum depth of the arc-shaped groove is 0.10mm-0.20mm.
8. The stamping apparatus of claim 1, wherein, The outer side surface of at least one of the first profiling convex part and the second profiling convex part comprises an R angle, the radius of the R angle is 0.15mm-0.25mm.
9. The stamping apparatus of claim 8, wherein, The limiting height of the keyboard of the stamping device is 1.68mm-1.78mm.
10. The stamping apparatus of claim 1, wherein, The roughing die includes a first die for a first roughing process and a second die for a second roughing process, and each of the first die and the second die includes a roughing die set and a first stationary die set disposed opposite to each other, the roughing die set of each of the first die and the second die includes a roughing die plate, and the fine die set includes a fine die plate.