Keyboard stamping die and stamping method

Abstract

The present application belongs to the technical field of stamping die, and discloses a keyboard stamping die and a stamping method. The die comprises an upper die assembly, a lower die assembly and a guide assembly. The upper die assembly comprises an upper die seat, an upper fixed plate, an upper die fixed plate, a stripper plate and a punch. The lower die assembly comprises a lower die seat, a lower die fixed plate, a backing plate and a lower die plate. The lower die plate is provided with a punching part corresponding to the punch. The guide assembly comprises a guide column and a guide sleeve. The lower die plate, the backing plate and the lower die fixed plate are respectively provided with a waste material leakage hole corresponding to the position of the punching part. The waste material leakage holes are sequentially connected to form a waste material discharge channel. The diameters of the waste material leakage holes increase sequentially along the direction of waste material discharge. The waste material formed by stamping is continuously discharged along the gradually expanding waste material discharge channel formed by the multiple die plates, thereby reducing the probability of waste material retention, accumulation and jamming during the waste material discharge process and improving the waste material discharge stability during the continuous stamping process of the keyboard stamping die. The application also discloses a method for keyboard stamping using the above keyboard stamping die.

Description

Technical Field

[0001] This invention belongs to the field of stamping die technology, specifically keyboard stamping die and stamping method. Background Technology

[0002] Keyboard metal panels, keyboard support plates, and other keyboard structural components are typically processed using stamping technology. During the stamping process, the punch and the lower die work together to punch holes or blank the material. Meanwhile, the waste generated is discharged through the waste discharge structure inside the die to ensure that the stamping process can be carried out continuously and stably.

[0003] Existing keyboard stamping dies generally include an upper die assembly, a lower die assembly, and a guiding mechanism. Scrap material is usually discharged through scrap discharge holes located in the lower die plate and lower die assembly. Because keyboard workpieces typically have an array-like punching structure, the amount of scrap material generated in a single stamping is relatively large. When existing dies use scrap discharge hole structures with uniform or indistinct hole diameters, the scrap material easily comes into contact with the inner wall of the scrap discharge hole during discharge, especially at locations where multiple scrap discharge holes connect. This can easily lead to scrap material retention, accumulation, or jamming, resulting in partial blockage of the scrap discharge channel.

[0004] When waste material cannot be discharged in a timely manner, the waste material retained inside the mold can easily interfere with subsequent stamping, affecting not only the continuity of stamping processing but also potentially increasing the frequency of mold cleaning and maintenance, thus impacting the stable operation of the mold. Furthermore, since existing waste removal structures mostly involve individual waste removal holes on each mold plate, lacking an overall optimized design for waste removal channels across multiple mold layers, significant discharge resistance still exists as waste material passes through each mold layer, making it difficult to meet the requirements for continuous and efficient waste removal during keyboard array stamping. Therefore, this paper provides a keyboard stamping mold and stamping method to solve the aforementioned problems. Summary of the Invention

[0005] The purpose of this invention is to provide a keyboard stamping die and a stamping method to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a keyboard stamping die, comprising an upper die assembly and a lower die assembly corresponding to the upper die assembly; The upper mold assembly includes an upper mold base, an upper fixing plate, an upper mold fixing plate, a stripper plate, and a punch. The upper fixing plate is fixedly connected to one side of the upper mold base, and the upper mold fixing plate is fixedly connected to the side of the upper fixing plate away from the upper mold base. The stripper plate is located on the side of the upper mold fixing plate away from the upper fixing plate, and the punch is fixedly connected to the upper mold fixing plate and penetrates the stripper plate. The lower die assembly includes a lower die base, a lower die fixing plate, a pad, and a lower die template. The lower die fixing plate is fixedly connected to one side of the lower die base. The pad is fixedly connected to the side of the lower die fixing plate away from the lower die base. The lower die template is fixedly connected to the side of the pad away from the lower die fixing plate. The lower die template is provided with punching holes that correspond to and cooperate with the punch. The lower template, pad, and lower die fixing plate are respectively provided with waste material leakage holes at the corresponding punching positions. Each of the waste material leakage holes is connected in sequence to form a waste discharge channel, and the diameter of each waste material leakage hole increases sequentially along the waste discharge direction.

[0007] Preferably, the waste discharge channel is composed of waste discharge holes in the lower template, waste discharge holes in the pad, and waste discharge holes in the lower template fixing plate, with the central axes of each waste discharge hole corresponding to each other.

[0008] Preferably, the diameter of two adjacent waste discharge holes increases sequentially, and the cross-sectional area of ​​the waste discharge channel increases gradually along the waste discharge direction.

[0009] Preferably, the punches are arranged in an array, and the punching section is arranged in a one-to-one correspondence with each punch. Each waste discharge hole is arranged at the waste discharge position of the corresponding punching section.

[0010] Preferably, the unloading plate is movably disposed between the upper mold fixing plate and the lower mold plate, and the punch penetrates through the unloading plate.

[0011] Preferably, a guide component is provided between the upper mold assembly and the lower mold assembly. The guide component includes a guide post and a guide sleeve, and the guide post and the guide sleeve are slidably engaged.

[0012] Preferably, the guide post is fixedly connected to the lower mold assembly, and the guide sleeve is fixedly connected to the upper mold assembly.

[0013] Preferably, the upper fixing plate, upper mold fixing plate, lower template, pad plate, and lower mold fixing plate are fixedly connected by fasteners.

[0014] Preferably, the waste discharge holes in the lower template, the pad, and the lower template fixing plate are correspondingly arranged to form a continuous waste discharge channel.

[0015] The stamping method for keyboard stamping dies includes the following steps: S1. Transport the sheet material to be stamped to the corresponding position in the punching section and complete the positioning; S2. Drive the upper die assembly to move relative to the lower die assembly, so that the punch and the punching part cooperate to complete the stamping; S3. The waste material formed by stamping enters the waste material leakage hole in the lower die plate, the pad plate and the lower die fixing plate in sequence, and is discharged through the waste discharge channel; Along the waste discharge direction, the diameter of each waste leakage hole increases sequentially; S4. The upper die assembly is reset, and the stripper plate separates the workpiece from the punch, completing one stamping cycle.

[0016] The beneficial effects of this invention are as follows: 1. This invention provides interconnected waste discharge holes at the corresponding punching positions of the lower template, pad, and lower die fixing plate, with the diameter of each waste discharge hole increasing sequentially along the waste discharge direction. The multi-layer templates together form a gradually expanding waste discharge channel. Compared with a structure using waste discharge holes of equal diameter, this provides a gradually expanding discharge space for waste, reduces the probability of waste stagnation, accumulation, and jamming at the connection points of the template layers, and improves the continuity and stability of the waste discharge process.

[0017] 2. By setting each waste discharge hole at the waste discharge position of the punching part and keeping the waste discharge holes of each layer connected, the waste generated by stamping can be discharged along the continuous waste discharge channel, reducing the interference caused by waste retention inside the mold to subsequent stamping, which is beneficial to reduce the frequency of mold cleaning and maintenance and improve the stability of continuous operation of keyboard stamping mold.

[0018] 3. The present invention uses an upper die assembly, a lower die assembly and a guide assembly to form a stamping mechanism. The guide post and the guide sleeve slide to ensure that the punch and the punching part maintain a corresponding fit. At the same time, combined with the gradually expanding waste discharge channel formed by the multi-layer template, the stamping and waste discharge are carried out in a coordinated manner while ensuring stamping accuracy. This makes the mold suitable for continuous processing of keyboard array punching and improves the overall reliability of the mold operation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a keyboard stamping die according to the present invention; Figure 2 This is an exploded structural diagram of a keyboard stamping die according to the present invention; Figure 3 This is an exploded structural oblique view of a keyboard stamping die according to the present invention; Figure 4 This is a schematic diagram from another perspective of a keyboard stamping die according to the present invention.

[0020] In the picture: 1. Upper die base; 2. Upper fixing plate; 3. Upper die fixing plate; 4. Stripper plate; 5. Punch; 6. Guide sleeve; 7. Guide post; 8. Lower die plate; 9. Backing plate; 10. Lower die fixing plate; 11. Lower die base; 12. Waste discharge hole; 13. Waste discharge channel; 14. Fastener; 15. Punching section; 100. Upper die assembly; 200. Lower die assembly; 300. Guide assembly. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] like Figures 1 to 4 As shown, a keyboard stamping die includes an upper die assembly 100, a lower die assembly 200, and a guide assembly 300; The upper mold assembly 100 includes an upper mold base 1, an upper fixing plate 2, an upper mold fixing plate 3, an unloading plate 4, and a punch 5. The upper fixing plate 2 is fixedly connected to one side of the upper mold base 1, the upper mold fixing plate 3 is fixedly connected to the side of the upper fixing plate 2 away from the upper mold base 1, the unloading plate 4 is movably disposed on the side of the upper mold fixing plate 3 away from the upper fixing plate 2, and the punch 5 is fixedly connected to the upper mold fixing plate 3 and passes through the unloading plate 4, so that the punch 5 can move synchronously with the upper mold assembly 100. The lower die assembly 200 includes a lower die base 11, a lower die fixing plate 10, a pad 9, and a lower die template 8. The lower die fixing plate 10 is fixedly connected to one side of the lower die base 11, the pad 9 is fixedly connected to the side of the lower die fixing plate 10 away from the lower die base 11, and the lower die template 8 is fixedly connected to the side of the pad 9 away from the lower die fixing plate 10. The lower die template 8 is provided with punching portions 15 that correspond to and cooperate with punches 5. Each punch 5 corresponds to one punching portion 15. The punches 5 and the punching portions 15 cooperate to complete the punching process of the keyboard workpiece. The guide assembly 300 includes a guide post 7 and a guide sleeve 6. The guide post 7 is fixedly connected to the lower die assembly 200, and the guide sleeve 6 is fixedly connected to the upper die assembly 100. The guide post 7 and the guide sleeve 6 are slidably engaged to ensure that the upper die assembly 100 performs stable reciprocating motion relative to the lower die assembly 200, and to ensure that the punch 5 and the punching part 15 maintain a corresponding engagement relationship, thereby improving the guiding accuracy during the stamping process. Among them, the upper fixing plate 2, the upper mold fixing plate 3, the lower template 8, the pad plate 9 and the lower mold fixing plate 10 are fixedly connected by fasteners 14, so that each component forms a stable assembly structure and ensures that the relative positions of each template remain stable during the stamping process. The improved structure of this invention is mainly located in the waste discharge mechanism; Specifically, the lower template 8, the pad 9, and the lower mold fixing plate 10 are respectively machined to form waste material leakage holes 12 at the positions corresponding to the punching part 15. Each waste material leakage hole 12 is set in a corresponding manner and is connected in sequence to form a waste discharge channel 13. Along the waste discharge direction, the diameter of the waste discharge hole 12 in the lower template 8 is smaller than that in the pad 9, and the diameter of the waste discharge hole 12 in the pad 9 is smaller than that in the lower mold fixing plate 10. Thus, the lower template 8, the pad 9 and the lower mold fixing plate 10 together form a waste discharge channel 13 with the diameter increasing sequentially along the waste discharge direction. Since the waste discharge channel 13 is not formed by a single template, but is a continuous through structure composed of the lower template 8, the pad 9 and the waste discharge holes 12 in the lower mold fixing plate 10, the waste formed by stamping passes through the waste discharge holes 12 of each layer in sequence. As the flow cross-sectional area of ​​the waste discharge channel 13 gradually increases, the contact area between the waste and the inner wall of the waste discharge hole 12 gradually decreases. This helps to reduce the probability of waste being stuck, accumulated and jammed during the waste discharge process, thereby improving the continuity of the waste discharge process. The punch 5 is set in an array structure according to the punching position of the keyboard workpiece. Each punch 5 is in one-to-one correspondence with the corresponding punching part 15. Each waste discharge hole 12 is set at the waste discharge position of the corresponding punching part 15, so that the waste formed at each punching position can enter the corresponding waste discharge channel 13 for discharge. The waste discharge holes 12 of each layer are kept aligned with the center to ensure that the waste can continuously pass through the lower template 8, the pad 9 and the lower mold fixing plate 10, and be discharged outside the mold through the waste discharge channel 13, so as to avoid the waste discharge effect being affected by the misalignment of the waste discharge holes 12 of each layer.

[0023] The stamping method for keyboard stamping dies includes the following steps: S1. The material to be processed is conveyed to the lower mold assembly 200, so that the material to be processed is located at the processing position corresponding to the lower mold plate 8, and the positioning is completed; S2. Drive the upper die assembly 100 to move along the guide assembly 300, so that the punch 5 gradually enters the corresponding punching part 15, and the punch 5 and the punching part 15 cooperate to complete the punching process of the keyboard workpiece. S3. The waste generated during the stamping process enters the waste discharge holes 12 in the lower die plate 8, and then sequentially enters the waste discharge holes 12 in the pad plate 9 and the lower die fixing plate 10. The waste is continuously discharged through the waste discharge channel 13 formed by the lower die plate 8, the pad plate 9 and the lower die fixing plate 10. Since the diameter of each waste discharge hole 12 increases sequentially along the waste discharge direction, the waste gradually obtains a larger flow space during the discharge process, thereby reducing the contact between the waste and the inner wall of the waste discharge hole 12 and reducing the situation of waste stagnation, accumulation and jamming in the waste discharge channel 13. S4. After the stamping is completed, the upper die assembly 100 is reset along the guide assembly 300, and the stripper plate 4 cooperates with the punch 5 to separate the processed workpiece from the punch 5. S5. The finished workpiece leaves the stamping area and then the next sheet metal to be processed is conveyed into the processing position. Steps S1 to S4 are repeated to realize the continuous stamping processing of the keyboard workpiece. Throughout the stamping process, the upper die assembly 100 and the lower die assembly 200 maintain a guiding and mating relationship through the guide assembly 300. Each layer of the die plate remains in a stable assembly state. The waste discharge holes 12 in the lower die plate 8, the pad plate 9, and the lower die fixing plate 10 together form a continuous waste discharge channel 13 with the hole diameter increasing sequentially along the waste discharge direction. This allows the waste generated during stamping to be continuously discharged, thereby improving the continuous working stability of the keyboard stamping die, reducing the number of downtime cleanings caused by waste retention, and helping to improve stamping efficiency and the continuous use performance of the die.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A keyboard stamping die, characterized in that, It includes an upper mold assembly (100) and a lower mold assembly (200) corresponding to the upper mold assembly (100); The upper mold assembly (100) includes an upper mold base (1), an upper fixing plate (2), an upper mold fixing plate (3), a stripper plate (4), and a punch (5). The upper fixing plate (2) is fixedly connected to one side of the upper mold base (1), the upper mold fixing plate (3) is fixedly connected to the side of the upper fixing plate (2) away from the upper mold base (1), the stripper plate (4) is disposed on the side of the upper mold fixing plate (3) away from the upper fixing plate (2), and the punch (5) is fixedly connected to the upper mold fixing plate (3) and penetrates the stripper plate (4). The lower die assembly (200) includes a lower die base (11), a lower die fixing plate (10), a pad plate (9), and a lower die template (8). The lower die fixing plate (10) is fixedly connected to one side of the lower die base (11), the pad plate (9) is fixedly connected to the side of the lower die fixing plate (10) away from the lower die base (11), and the lower die template (8) is fixedly connected to the side of the pad plate (9) away from the lower die fixing plate (10). The lower die template (8) is provided with a punching part (15) that corresponds to and cooperates with the punch (5). The lower template (8), pad (9) and lower mold fixing plate (10) are respectively provided with waste leakage holes (12) at the positions of the punching part (15). Each waste leakage hole (12) is connected in sequence to form a waste discharge channel (13), and the diameter of each waste leakage hole (12) increases in sequence along the waste discharge direction.

2. The keyboard stamping die according to claim 1, characterized in that: The waste discharge channel (13) is composed of the waste discharge hole (12) in the lower template (8), the waste discharge hole (12) in the pad plate (9) and the waste discharge hole (12) in the lower mold fixing plate (10), and the central axis of each waste discharge hole (12) corresponds to each other.

3. The keyboard stamping die according to claim 2, characterized in that: The diameter of the holes between two adjacent waste discharge holes (12) increases sequentially, and the cross-sectional area of ​​the waste discharge channel (13) increases step by step along the waste discharge direction.

4. The keyboard stamping die according to claim 1, characterized in that: The punches (5) are arranged in an array, and the punching parts (15) are arranged one-to-one with each punch (5). Each waste discharge hole (12) is arranged at the waste discharge position of the corresponding punching part (15).

5. The keyboard stamping die according to claim 1, characterized in that: The unloading plate (4) is movably disposed between the upper mold fixing plate (3) and the lower mold plate (8), and the punch (5) penetrates through the unloading plate (4).

6. The keyboard stamping die according to claim 1, characterized in that: A guide assembly (300) is provided between the upper mold assembly (100) and the lower mold assembly (200). The guide assembly (300) includes a guide post (7) and a guide sleeve (6), and the guide post (7) and the guide sleeve (6) are slidably engaged.

7. The keyboard stamping die according to claim 6, characterized in that: The guide post (7) is fixedly connected to the lower mold assembly (200), and the guide sleeve (6) is fixedly connected to the upper mold assembly (100).

8. The keyboard stamping die according to claim 1, characterized in that: The upper fixing plate (2), upper mold fixing plate (3), lower mold plate (8), pad plate (9) and lower mold fixing plate (10) are fixedly connected by fasteners (14).

9. The keyboard stamping die according to claim 1, characterized in that: The waste discharge holes (12) in the lower template (8), pad (9) and lower template fixing plate (10) are set in a corresponding manner to form a continuous waste discharge channel (13).

10. A stamping method for a keyboard stamping die, characterized in that, Includes the following steps: S1. The sheet material to be stamped is conveyed to the corresponding position of the punching section (15) and the positioning is completed; S2. Drive the upper die assembly (100) to move relative to the lower die assembly (200), so that the punch (5) and the punching part (15) cooperate to complete the stamping; S3. The waste material formed by stamping enters the waste material leakage hole (12) in the lower die plate (8), the pad plate (9) and the lower die fixing plate (10) in sequence, and is discharged through the waste discharge channel (13); Along the waste discharge direction, the diameter of each waste leakage hole (12) increases sequentially; S4. The upper die assembly (100) is reset, and the stripper plate (4) separates the workpiece from the punch (5) to complete one stamping cycle.

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