Efficient stamping part for relay
By optimizing the structural design of stamped parts, including features such as V-shaped guide grooves and positioning bosses, the problems of precision and consistency of stamped parts have been solved, achieving higher forming accuracy and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 宁波途丰电气有限公司
- Filing Date
- 2025-05-13
- Publication Date
- 2026-04-28
AI Technical Summary
The existing stamped parts have a simple structure, which leads to poor stamping accuracy and part consistency, and may result in the stamped parts being incompatible with the machinery.
The design incorporates V-shaped guide channels, positioning bosses, guide holes, pre-compensation curved surfaces, double-step arc-blocking structures, elastic unloading guide surfaces, elastic unloading grooves, partitioned weak grooves, variable thickness transition zones, and die-entry adapter grooves to optimize the forming process of stamped parts.
It improves the forming accuracy and consistency of stamped parts, reduces demolding resistance, reduces mold wear and material jamming, and enhances the ablation resistance life of stamped surfaces.
Smart Images
Figure CN224177290U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of stamping technology, and in particular to a high-efficiency stamping part for relays. Background Technology
[0002] Stamped parts are metal parts made by stamping metal into various mechanical structures to meet different needs.
[0003] However, current stamped parts have relatively simple structures, and during stamping, the stamping accuracy and consistency of the parts have large deviations, which may lead to incompatibility between the stamped parts and the machinery. Therefore, we propose a high-efficiency stamped part for relays. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies. However, current stamped parts have relatively simple structures, and during stamping, the stamping accuracy and consistency of the parts deviate significantly, which may lead to incompatibility between the stamped parts and the machinery.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A high-efficiency stamped part for relays includes a stamped part body. The top of the stamped part body has a V-shaped guide groove. A positioning boss is installed on the side of the top of the stamped part body near the V-shaped guide groove. A guide hole is installed on the top surface of the stamped part body near the positioning boss. A pre-compensated curved surface is installed on the top surface of the stamped part body near its edge. A double-step arc-isolating structure is installed on the front of the stamped part body. An elastic unloading guide surface is installed at the bottom of the double-step arc-isolating structure. An elastic unloading guide groove is opened on the back of the stamped part body. A partitioned weak groove is opened on the side of the stamped part body. A variable thickness transition zone is opened at the bottom of the stamped part body. An infeed adapter groove is opened on the bottom surface of the variable thickness transition zone.
[0007] As a preferred embodiment of this utility model, the positioning edge of the stamping body is provided with redundant positioning bosses, the height of the positioning bosses is 1.5mm and they are asymmetrically distributed; a variable thickness transition zone is provided at the connection between the moving contact and the stationary contact of the stamping body, the thickness of the variable thickness transition zone gradually changes from 0.5mm to 1.2mm, which is used to eliminate local deformation caused by sudden changes in stamping stress.
[0008] As a preferred embodiment of this utility model, a double-step arc-blocking structure is provided between the moving spring and the stationary contact of the stamping body. The double-step arc-blocking structure is composed of two stepped surfaces with a height difference of 0.3mm, and the stepped surfaces form a 45° angle with the stamping direction, which is used to block the arc propagation path and reduce the ablation damage of the stamping surface.
[0009] As a preferred embodiment of this utility model, the unloading contact surface of the stamping part body is provided with an elastic unloading guide surface. The elastic unloading guide surface is an inclined contact surface covered with polyurethane material, and its demolding angle is 2°. An elastic unloading guide groove is provided on the side of the elastic unloading guide surface. The width of the elastic unloading guide groove gradually changes from 3mm to 5mm, which is used to reduce the demolding resistance during high-speed stamping and maintain the surface finish.
[0010] As a preferred embodiment of this utility model, the waste separation area of the stamped part body is provided with a partitioned weak groove. The depth of the partitioned weak groove is 0.1mm and a stress concentration notch is provided at the bottom of the groove. The extension direction of the partitioned weak groove coincides with the parting line of the stamped part, so that the burr height of the fracture surface of the waste after stamping is ≤0.02mm.
[0011] As a preferred embodiment of this utility model, the progressive die adaptation area of the stamping part body is provided with a die adaptation groove. The width of the die adaptation groove increases linearly from 2mm to 4mm, and the groove wall is provided with a transition arc with a radius of 0.5mm, which is used to match the continuous stamping action of multi-station progressive dies and reduce die wear.
[0012] As a preferred embodiment of this utility model, the surface roughness Ra of the stepped surface of the double-step arc-isolating structure is ≤0.4μm, and a rounded corner of R1.5 is provided at the junction of the steps. The horizontal projection width of the stepped surface is 1.2 times the thickness of the stamping body, which is used to balance the arc distribution and improve the ablation resistance life of the stamping surface.
[0013] As a preferred embodiment of this utility model, the depth of the V-shaped guide groove is 1 / 3 of the thickness of the stamped part body, and the bottom of the groove is provided with a rounded corner of R0.8; the edge of the guide hole is provided with a chamfer of 0.1mm, and the chamfer angle is 30°, which is used to eliminate the material jamming phenomenon during the stamping positioning process.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] In this invention, the forming accuracy and consistency of the stamped part are increased by designing the forming structure, including the V-shaped guide groove, positioning boss, guide hole, pre-compensation curved surface, double-step arc-blocking structure, elastic unloading guide surface, elastic unloading guide groove, partitioned weak groove, variable thickness transition zone, and die fitting groove. Attached Figure Description
[0016] Figure 1 A schematic diagram of the overall structure of a high-efficiency stamped part for a relay provided by this utility model;
[0017] Figure 2 A schematic diagram of the bottom structure of a high-efficiency stamped part for a relay provided by this utility model;
[0018] Figure 3 A schematic diagram of the bottom structure of a double-step arc-isolating structure for a high-efficiency stamped part for a relay provided by this utility model;
[0019] Figure 4 This is a schematic diagram of the back structure of a high-efficiency stamped part for a relay provided by this utility model.
[0020] Legend: 1. Stamped part body; 2. V-shaped guide groove; 3. Positioning boss; 4. Guide hole; 5. Pre-compensated curved surface; 6. Double-step arc-blocking structure; 7. Elastic unloading guide surface; 8. Elastic unloading guide groove; 9. Partitioned weak groove; 10. Variable thickness transition zone; 11. Die-entry adapter groove. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0022] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be provided below with reference to relevant embodiments, and several embodiments of this utility model will be given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this utility model more thorough and complete.
[0023] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.
[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0025] Example 1
[0026] like Figures 1-4As shown, this utility model provides a technical solution: a high-efficiency stamping part for relays, including a stamping part body 1, a V-shaped guide groove 2 on the top of the stamping part body 1, a positioning boss 3 on the side of the top of the stamping part body 1 near the V-shaped guide groove 2, a guide hole 4 on the top surface of the stamping part body 1 near the positioning boss 3, a pre-compensation curved surface 5 on the top surface of the stamping part body 1 near the edge, a double-step arc-isolating structure 6 on the front of the stamping part body 1, an elastic unloading guide surface 7 on the bottom of the double-step arc-isolating structure 6, an elastic unloading guide groove 8 on the back of the stamping part body 1, a partitioned weak groove 9 on the side of the stamping part body 1, a variable thickness transition zone 10 on the bottom of the stamping part body 1, and an entry die adapter groove 11 on the bottom surface of the variable thickness transition zone 10.
[0027] Example 2
[0028] like Figures 1-4As shown, the positioning edge of the stamped part body 1 is provided with redundant positioning bosses 3, the height of which is 1.5mm and they are asymmetrically distributed; a variable thickness transition zone 10 is provided at the connection between the moving contact and the stationary contact of the stamped part body 1, the thickness of which gradually changes from 0.5mm to 1.2mm to eliminate local deformation caused by sudden changes in stamping stress; a double-step arc-isolating structure 6 is provided between the moving spring and the stationary contact of the stamped part body 1, the double-step arc-isolating structure 6 consisting of two stepped surfaces with a height difference of 0.3mm. The stamped part body 1 has a stepped surface at a 45° angle to the stamping direction to block the arc propagation path and reduce ablation damage to the stamping surface. The unloading contact surface of the stamped part body 1 is provided with an elastic unloading guide surface 7, which is an inclined contact surface covered with polyurethane material and has a draft angle of 2°. An elastic unloading guide groove 8 is provided on the side of the elastic unloading guide surface 7, with a width gradually changing from 3mm to 5mm. This is used to reduce the demolding resistance during high-speed stamping and maintain surface finish. The waste material of the stamped part body 1 is separated. The area is equipped with a partitioned weak groove 9, which has a depth of 0.1mm and a stress concentration notch at the bottom. The extension direction of the partitioned weak groove 9 coincides with the parting line of the stamped part, ensuring that the burr height of the fracture surface of the scrap after stamping is ≤0.02mm. The progressive die adaptation area of the stamped part body 1 is equipped with a die adaptation groove 11, the width of which linearly increases from 2mm to 4mm, and the groove wall is provided with a transition arc with a radius of 0.5mm to match the continuous stamping action of multi-station progressive dies and reduce die wear. The surface roughness Ra of the stepped surface of the double-step arc-isolating structure 6 is ≤0.4μm, and a rounded corner of R1.5 is provided at the junction of the steps. The horizontal projection width of the stepped surface is 1.2 times the thickness of the stamping body 1, which is used to balance the arc distribution and improve the ablation resistance life of the stamping surface. The depth of the V-shaped guide groove 2 is 1 / 3 of the thickness of the stamping body 1, and a rounded corner of R0.8 is provided at the bottom of the groove. The edge of the guide hole 4 is chamfered by 0.1mm and the chamfer angle is 30°, which is used to eliminate the material jamming phenomenon during the stamping positioning process.
[0029] The working process of this utility model is as follows: When using a high-efficiency stamping part for relays, the V-shaped guide groove 2 can guide the current and fluid, increasing their flow speed. The positioning boss 3 and the guide hole 4 can help the stamping body 1 to perform better positioning during stamping. The pre-compensation curved surface 5 and the die fitting groove 11 can improve the ease of demolding. The double-step arc-blocking structure 6, the elastic unloading guide surface 7, and the elastic unloading guide groove 8 all improve the stamping stability on the stamping table. The partitioned weak groove 9 can better remove burrs after stamping. Using this high-efficiency stamping part for relays increases the forming accuracy and consistency of the stamping part.
[0030] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A high-efficiency stamped part for a relay, comprising a stamped part body (1), characterized in that: The top of the stamping body (1) is provided with a V-shaped guide groove (2), and a positioning boss (3) is installed on the side of the top of the stamping body (1) near the V-shaped guide groove (2). A guide hole (4) is installed on the top surface of the stamping body (1) near the positioning boss (3). A pre-compensation curved surface (5) is installed on the top surface of the stamping body (1) near the edge. A double-step arc-blocking structure (6) is installed on the front of the stamping body (1). An elastic unloading guide surface (7) is installed at the bottom of the double-step arc-blocking structure (6). An elastic unloading guide groove (8) is provided on the back of the stamping body (1). A partitioned weak groove (9) is provided on the side of the stamping body (1). A variable thickness transition area (10) is provided at the bottom of the stamping body (1). An infeed adapter groove (11) is provided on the bottom surface of the variable thickness transition area (10).
2. The high-efficiency stamped part for a relay according to claim 1, characterized in that: The positioning edge of the stamping body (1) is provided with redundant positioning bosses (3), the positioning bosses (3) are 1.5mm high and are asymmetrically distributed; a variable thickness transition zone (10) is provided at the connection between the moving contact and the stationary contact of the stamping body (1), the thickness of the variable thickness transition zone (10) gradually changes from 0.5mm to 1.2mm, which is used to eliminate local deformation caused by sudden change in stamping stress.
3. The high-efficiency stamped part for a relay according to claim 1, characterized in that: The moving spring and stationary contact of the stamping body (1) are provided with a double-step arc-blocking structure (6). The double-step arc-blocking structure (6) is composed of two stepped surfaces with a height difference of 0.3 mm, and the stepped surfaces are at a 45° angle to the stamping direction. It is used to block the arc propagation path and reduce the ablation damage of the stamping surface.
4. The high-efficiency stamped part for a relay according to claim 1, characterized in that: The ejection contact surface of the stamping body (1) is provided with an elastic ejection guide surface (7). The elastic ejection guide surface (7) is an inclined contact surface covered with polyurethane material, and its demolding angle is 2°. An elastic ejection guide groove (8) is opened on the side of the elastic ejection guide surface (7). The width of the elastic ejection guide groove (8) gradually changes from 3mm to 5mm, which is used to reduce the demolding resistance during high-speed stamping and maintain the surface finish.
5. A high-efficiency stamped part for a relay according to claim 1, characterized in that: The waste separation area of the stamped part body (1) is provided with a partitioned weak groove (9). The depth of the partitioned weak groove (9) is 0.1 mm and a stress concentration notch is provided at the bottom of the groove. The extension direction of the partitioned weak groove (9) coincides with the parting line of the stamped part, so that the burr height of the fracture surface of the waste after stamping is ≤0.02 mm.
6. A high-efficiency stamped part for a relay according to claim 1, characterized in that: The progressive die adaptation area of the stamping part body (1) is provided with a die adaptation groove (11). The width of the die adaptation groove (11) increases linearly from 2mm to 4mm, and the groove wall is provided with a transition arc with an R angle of 0.5mm, which is used to match the continuous stamping action of multi-station progressive dies and reduce die wear.
7. A high-efficiency stamped part for a relay according to claim 1, characterized in that: The surface roughness Ra of the stepped surface of the double-step arc-isolating structure (6) is ≤0.4μm, and a rounded corner of R1.5 is provided at the junction of the steps. The horizontal projection width of the stepped surface is 1.2 times the thickness of the stamping body (1), which is used to balance the arc distribution and improve the ablation resistance life of the stamping surface.
8. A high-efficiency stamped part for a relay according to claim 1, characterized in that: The depth of the V-shaped guide groove (2) is 1 / 3 of the thickness of the stamping body (1), and the bottom of the groove is provided with a radius of R0.8; the edge of the guide hole (4) is provided with a chamfer of 0.1mm, and the chamfer angle is 30°, which is used to eliminate the material jamming phenomenon during the stamping positioning process.