High-precision stamping die structure for earring manufacturing
By introducing a fixed rod, sliding rod, spring, and pressure plate pressing assembly and guide rod for precise guidance in the earring stamping die, the problem of material misalignment during the stamping process of traditional dies is solved, realizing high-precision forming and rapid die change, thus improving the quality and efficiency of earring manufacturing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YIWU INDAL & COMMERICAL COLLEGE
- Filing Date
- 2025-06-16
- Publication Date
- 2026-05-19
AI Technical Summary
Traditional earring stamping dies, when processing precious metals, lack an effective material clamping and buffering mechanism, which causes the material to easily shift or wrinkle during the stamping process, affecting the dimensional accuracy and surface forming quality of the earrings.
The pressing assembly, consisting of a fixed rod, a sliding rod, a spring, and a pressure plate, along with the precise guidance of the guide rod, enables accurate control of the stamping process. When the sliding plate is driven to move downward by the hydraulic rod, the guide rod is inserted into the groove of the worktable for positioning, and the spring buffer mechanism makes the pressure plate press the raw material. At the same time, the pivoting structure of the rotating rod and the fixed shaft, together with the elastic element, enables the quick assembly and disassembly of the mold.
It significantly improves the precision and consistency of earring stamping, simplifies the mold change process, increases production efficiency, and reduces equipment downtime losses.
Smart Images
Figure CN224254026U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of earring manufacturing technology, and in particular to a high-precision stamping die structure for earring manufacturing. Background Technology
[0002] As precision jewelry, earrings require extremely high precision in forming and surface quality during manufacturing. Traditional stamping processes for precious metal earrings often result in low product yields due to issues such as material displacement and die misalignment. Especially in the stamping of complex patterns or openwork structures, ensuring material positioning stability and improving stamping precision have become key technical challenges in the industry. Therefore, developing a stamping die structure with high-precision positioning and buffer clamping functions is of great significance for improving the efficiency and quality of earring manufacturing.
[0003] Currently, most earring stamping dies adopt a rigid pressing structure, where the upper die directly impacts the lower die to complete the forming process via hydraulic or mechanical drive. Some dies achieve initial guidance through guide pillars and guide sleeves, but lack dynamic pressure adjustment capabilities. Die replacement relies on bolt fastening or snap-fit structures, requiring the disassembly of multiple components and the use of tools, making the operation cumbersome and time-consuming.
[0004] However, during the stamping process, the above structure lacks an effective material clamping and buffering mechanism, which can easily cause thin or highly ductile precious metal materials to shift or wrinkle at the moment of stamping, thus affecting the dimensional accuracy and surface forming quality of the earrings. Utility Model Content
[0005] To overcome the above deficiencies, this utility model provides a high-precision stamping die structure for earring manufacturing. It aims to improve the problem that, during the stamping process, the lack of an effective material clamping and buffering mechanism can easily cause thin or highly ductile precious metal materials to shift or wrinkle during the stamping process, thereby affecting the dimensional accuracy and surface forming quality of the earrings.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-precision stamping die structure for earring manufacturing, comprising a base, a fixing rod fixedly connected to the upper surface of the base, a hydraulic rod fixedly connected to the outer wall of the base, a sliding plate fixedly connected to the output end of the hydraulic rod, a fixing plate fixedly connected to the lower surface of the sliding plate, a connecting plate fixedly connected to the outer wall of the fixing plate, and a pressing component provided on the lower surface of the connecting plate;
[0007] The pressing assembly includes a second fixing rod, one end of which is fixedly connected to the lower surface of the connecting plate. A fixing plate is fixedly connected to the outer wall of the second fixing rod, and a sliding rod is slidably connected to the outer wall of the second fixing rod. A spring is sleeved on the outer wall of the second fixing rod. A guide rod is fixedly connected to the lower surface of the connecting plate, and a pressure plate is fixedly connected to one end of the sliding rod.
[0008] Furthermore, a workbench is fixedly connected to the upper surface of the base, a lower mold is fixedly connected to the upper surface of the workbench, an upper mold is attached to the lower surface of the fixing plate, and a replacement component is provided on the outer wall of the upper mold.
[0009] Furthermore, the replacement component includes a rotating rod disposed on the outer wall of the upper mold, a fixed shaft rotatably connected inside the rotating rod, a nut threadedly connected to the outer wall of the rotating rod, and an elastic element fitting against the outer wall of the nut.
[0010] Furthermore, both ends of the fixed shaft are fixedly connected to the outer wall of the fixed plate, and the upper surface of the nut is attached to the outer wall of the upper mold.
[0011] Furthermore, the outer wall of one end of the rotating rod is provided with an external thread that matches the internal thread of the nut.
[0012] Furthermore, the workbench has a groove inside, and the outer wall of the guide rod is slidably connected to the inner wall of the workbench.
[0013] Furthermore, the sliding plate is internally slidably connected to the outer wall of the fixed rod, and the pressure plate is positioned above the worktable.
[0014] Furthermore, one end of the spring is fixedly connected to the outer wall of the fixed disk, and the other end of the spring is fixedly connected to one end of the sliding rod.
[0015] This utility model has the following beneficial effects:
[0016] 1. In this utility model, by setting up a pressing assembly consisting of a fixed rod, a sliding rod, a spring and a pressure plate, and with the precise guiding effect of the guide rod, the stamping process is precisely controlled. When the hydraulic rod drives the sliding plate to move down, the guide rod first inserts into the groove of the worktable for positioning. Then the spring buffer mechanism makes the pressure plate press the raw material, effectively preventing the material from shifting during the stamping process, and significantly improving the accuracy and consistency of earring stamping.
[0017] 2. In this utility model, the mold can be quickly disassembled and assembled by rotating the nut. The pivot structure of the rotating rod and the fixed shaft, together with the pre-tightening force of the elastic element, ensures the stability of the upper mold installation while enabling single-person operation to complete the mold replacement. This shortens the traditional mold replacement time, significantly improves production efficiency, and reduces equipment downtime losses caused by frequent mold replacement. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of a high-precision stamping die structure for earring manufacturing proposed in this utility model.
[0019] Figure 2This is a schematic diagram of the workbench structure of a high-precision stamping die structure for earring manufacturing proposed in this utility model.
[0020] Figure 3 This is a schematic diagram of the pressure plate portion of a high-precision stamping die structure for earring manufacturing proposed in this utility model.
[0021] Figure 4 for Figure 3 Enlarged view of point A in the image;
[0022] Figure 5 This is a schematic diagram of the upper die portion of a high-precision stamping die structure for earring manufacturing proposed in this utility model.
[0023] Legend:
[0024] 1. Base; 2. Workbench; 3. Fixed rod one; 4. Sliding plate; 5. Hydraulic rod; 6. Fixed plate one; 7. Upper mold; 8. Connecting plate; 9. Guide rod; 10. Fixed rod two; 11. Fixed plate; 12. Spring; 13. Sliding rod; 14. Groove; 15. Pressure plate; 16. Fixed shaft; 17. Rotating rod; 18. Elastic element; 19. Nut; 20. Lower mold. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] Reference Figures 1-4 The present invention provides an embodiment of a high-precision stamping die structure for earring manufacturing, comprising a base 1, providing overall support and mounting foundation, a fixing rod 3 fixedly connected to the upper surface of the base 1 to guide the up-and-down movement of the sliding plate 4, a hydraulic rod 5 fixedly connected to the outer wall of the base 1 to provide stamping power to push the sliding plate 4 to move, the output end of the hydraulic rod 5 fixedly connected to the sliding plate 4, which drives the upper die part to move under the drive of the hydraulic rod 5, a fixing plate 6 fixedly connected to the lower surface of the sliding plate 4, a connecting plate 8 fixedly connected to the outer wall of the fixing plate 6, and a pressing component provided on the lower surface of the connecting plate 8;
[0027] The pressing assembly includes a second fixed rod 10, a supporting spring 12, and a guiding sliding rod 13. One end of the second fixed rod 10 is fixedly connected to the lower surface of the connecting plate 8. A fixed plate 11 is fixedly connected to the outer wall of the second fixed rod 10, fixing one end of the spring 12. A sliding rod 13 is slidably connected to the outer wall of the second fixed rod 10, transmitting pressure along the second fixed rod 10. The spring 12 is sleeved on the outer wall of the second fixed rod 10, providing buffering force to stabilize the pressing plate 15. A guide rod 9 is fixedly connected to the lower surface of the connecting plate 8, inserting into the groove 14 to achieve precise positioning and guidance. One end of the sliding rod 13 is fixedly connected to the pressing plate 15, directly pressing the material to prevent displacement.
[0028] Specifically, the metal sheet to be processed is first placed flat on the upper surface of the workbench 2. By activating the hydraulic rod 5, the output end of the hydraulic rod 5 pushes the sliding plate 4 to move smoothly downward along the vertical outer wall of the fixed rod 3. The downward movement of the sliding plate 4 causes the fixed plate 6 and the connecting plate 8 fixedly connected to the fixed plate 6 to move downward synchronously. During this process, the connecting plate 8 drives the guide rod 9 and the fixed rod 10 to move downward together. The guide rod 9 is accurately inserted into the groove 14 corresponding to the lower mold 20 inside the workbench 2, providing precise guidance and positioning for the entire stamping process. Subsequently, the fixed rod 10 continues to move downward, pushing the sliding rod 13 to slide axially along the outer wall of the fixed rod 10, so that the pressure plate 15 presses the metal sheet. During this process, the inner wall of the sliding rod 13 and the outer wall of the fixed rod 10 maintain a sliding fit, while the compression spring 12 generates a buffering force to ensure that the pressure plate 15 applies a stable and uniform pressing force to the material, effectively preventing the material from shifting or deforming during the stamping process.
[0029] Reference Figure 5A workbench 2 is fixedly connected to the upper surface of the base 1, supporting the lower mold 20 and placing processing materials. The lower mold 20 is fixedly connected to the upper surface of the workbench 2, cooperating with the upper mold 7 to complete stamping. The lower surface of the fixing plate 6 is attached to the upper mold 7, cooperating with the lower mold 20 to complete stamping. A replacement component is provided on the outer wall of the upper mold 7, including a rotating rod 17, which allows the upper mold 7 to be disassembled and assembled by rotation. The rotating rod 17 is located on the outer wall of the upper mold 7, and a fixed shaft 16 is rotatably connected inside the rotating rod 17, serving as the rotation fulcrum of the rotating rod 17. A nut 19 is threadedly connected to the outer wall of the rotating rod 17, and the mold fixing state is controlled by tightening or loosening it. The outer wall of the nut 19 is fitted with an elastic element 18, which is compressed by the nut 19 to generate a fixing force. Both ends of the fixed shaft 16 are fixedly connected to the outer wall of the fixed plate 6. The upper surface of the nut 19 is fitted to the outer wall of the upper mold 7. One end of the rotating rod 17 has an external thread that matches the internal thread of the nut 19. The worktable 2 has a groove 14 inside to accommodate the guide rod 9 for precise positioning. The outer wall of the guide rod 9 is slidably connected to the inner wall of the worktable 2. The sliding plate 4 is slidably connected to the outer wall of the fixed rod 3. The pressure plate 15 is set above the worktable 2. One end of the spring 12 is fixedly connected to the outer wall of the fixed plate 11, and the other end of the spring 12 is fixedly connected to one end of the sliding rod 13.
[0030] Specifically, rotate nut 19 to move it axially along the external thread of rotating rod 17 and release it from the clamping state of elastic element 18. At this time, rotating rod 17 can rotate freely around fixed shaft 16. The operator can rotate rotating rod 17 outward from the mounting position of fixed plate 6 to release the fixation of upper mold 7. When installing a new mold, first align the mounting position of upper mold 7 with fixed plate 6, then rotate rotating rod 17 back to the mounting position, and then tighten nut 19 to clamp elastic element 18. The restoring force of elastic element 18 will firmly fix upper mold 7 on fixed plate 6, completing the mold replacement operation.
[0031] Working principle: When a high-precision stamping die for earring manufacturing is required, the raw material is first placed on the workbench 2. By activating the hydraulic rod 5, the output end of the hydraulic rod 5 pushes the sliding plate 4 downward along the outer wall of the fixed rod 3. At this time, the movement of the sliding plate 4 will drive the fixed plate 6 and the connecting plate 8 fixed to the fixed plate 6 to move downward. When the connecting plate 8 moves, it will drive the guide rod 9 and the fixed rod 10 to move downward. At this time, the guide rod 9 will be inserted into the lower die 20 opened inside the workbench 2. The movement of the guide rod 9 provides guidance for the movement of the fixed rod 10. Then, when the fixed rod 10 drives the sliding rod 13 to move downward, the pressure plate 15 will press the raw material tightly. During this process, the inner wall of the sliding rod 13 will slide along the outer wall of the fixed rod 10, thereby squeezing the spring 12, so that the pressure plate 15 firmly squeezes the raw material, preventing the raw material from deviating during stamping and affecting the stamping effect.
[0032] In addition, the upper mold 7 will wear out during long-term use. When the upper mold 7 needs to be replaced, simply rotate the nut 19 so that the nut 19 gradually moves away from the outer wall of the elastic element 18, which will release the fixation between the fixing plate 6 and the upper mold 7. At this time, the upper mold 7 can be removed and replaced by pulling the rotating rod 17 along the outer wall of the fixing shaft 16. When installing the upper mold 7, simply rotate the rotating rod 17 along the outer wall of the fixing shaft 16 to the inside of the upper mold 7, and then tighten the nut 19 to squeeze the elastic element 18, so that the nut 19 fixes the upper mold 7 and the fixing plate 6.
[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A high-precision stamping die structure for earring manufacturing, comprising a base (1), characterized in that: A fixing rod (3) is fixedly connected to the upper surface of the base (1), a hydraulic rod (5) is fixedly connected to the outer wall of the base (1), a sliding plate (4) is fixedly connected to the output end of the hydraulic rod (5), a fixing plate (6) is fixedly connected to the lower surface of the sliding plate (4), a connecting plate (8) is fixedly connected to the outer wall of the fixing plate (6), and a pressing component is provided on the lower surface of the connecting plate (8). The pressing assembly includes a second fixing rod (10), one end of which is fixedly connected to the lower surface of the connecting plate (8). A fixing plate (11) is fixedly connected to the outer wall of the second fixing rod (10). A sliding rod (13) is slidably connected to the outer wall of the second fixing rod (10). A spring (12) is sleeved on the outer wall of the second fixing rod (10). A guide rod (9) is fixedly connected to the lower surface of the connecting plate (8). A pressure plate (15) is fixedly connected to one end of the sliding rod (13).
2. The high-precision stamping die structure for earring manufacturing according to claim 1, characterized in that: A workbench (2) is fixedly connected to the upper surface of the base (1), and a lower mold (20) is fixedly connected to the upper surface of the workbench (2). An upper mold (7) is attached to the lower surface of the fixing plate (6), and a replacement component is provided on the outer wall of the upper mold (7).
3. The high-precision stamping die structure for earring manufacturing according to claim 2, characterized in that: The replacement component includes a rotating rod (17), which is disposed on the outer wall of the upper mold (7). A fixed shaft (16) is rotatably connected inside the rotating rod (17). A nut (19) is threadedly connected to the outer wall of the rotating rod (17), and an elastic element (18) is attached to the outer wall of the nut (19).
4. The high-precision stamping die structure for earring manufacturing according to claim 3, characterized in that: Both ends of the fixed shaft (16) are fixedly connected to the outer wall of the fixed plate (6), and the upper surface of the nut (19) is attached to the outer wall of the upper mold (7).
5. The high-precision stamping die structure for earring manufacturing according to claim 3, characterized in that: The outer wall of one end of the rotating rod (17) is provided with an external thread that matches the internal thread of the nut (19).
6. The high-precision stamping die structure for earring manufacturing according to claim 2, characterized in that: The workbench (2) has a groove (14) inside, and the outer wall of the guide rod (9) is slidably connected to the inner wall of the workbench (2).
7. The high-precision stamping die structure for earring manufacturing according to claim 1, characterized in that: The sliding plate (4) is internally slidably connected to the outer wall of the fixed rod (3), and the pressure plate (15) is set above the workbench (2).
8. The high-precision stamping die structure for earring manufacturing according to claim 1, characterized in that: One end of the spring (12) is fixedly connected to the outer wall of the fixed disk (11), and the other end of the spring (12) is fixedly connected to one end of the sliding rod (13).