A tooth plate die with a small chamfer and a reverse chamfer
Patent Information
- Application Number
- CN202522451463.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-19
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-11-19
AI Technical Summary
通过上述技术方案，通过上模座的上垫板强化结构支撑，一号预切冲头下端的预切镶件与二号预切冲头配合完成分步预切齿形，为后续挤齿留足余量，镶件以保障上模成型精度，主冲头与一侧的齿圈镶件配合下模座的挤压冲头、倒角冲头，同步实现挤齿减塌角与模内倒角，凹模镶件、凹模板完成冲孔落料，卸料板辅助料条卸料，顶件器上端的孔冲提供定位基准，解决传统模具需后续机加工倒角、塌角过大的问题
本实用新型提出的一种小塌角兼倒角成型的齿板模具，通过挤齿成型原理及多工序配合，分两步预切齿形并留余量后挤齿，有效减少齿板齿部塌角大小，避免因料厚增加导致齿形功能区域减少的问题，提升产品使用功能区域与使用寿命，稳定产品性能；采用模内倒角替代传统机加工倒角，无需后续人工加工，降低人工成本并缩短加工周期；先冲导正孔定位确保工艺精度，配合各冲头、镶件的精准配合，极大提升产品合格率，同时整体模具结构通过上垫板、顶件器等部件保障成型稳定性，进一步提升产品安全性能。
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Figure CN224895439U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of toothed plate mold technology, and in particular to a toothed plate mold for forming small collapsible corners and chamfers. Background Technology
[0002] In the production of traditional toothed plate molds, the size of the toothed plate collapse angle increases with the increase of the product material thickness, resulting in a reduction of the toothed functional area of the toothed plate and affecting the service life of the product.
[0003] However, when using existing equipment, the chamfering is often done by machining, which increases labor costs and processing time.
[0004] Therefore, those skilled in the art have provided a toothed plate mold for forming small collapse and chamfering to solve the problems mentioned in the background art. Utility Model Content
[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a toothed plate mold for small collapse and chamfering. The toothed part of the toothed plate is extruded through a multi-process method to reduce the collapse of the product, improve the functional area of the subsequent product, extend the product life and stabilize the product performance. The in-mold chamfering can reduce labor costs and processing cycle.
[0006] To achieve the above objectives, this utility model provides the following technical solution: A toothed plate mold for small-angle chamfering includes an upper mold base, a lower mold base, and a strip. An upper backing plate is fixedly connected to one side of the lower end face of the upper mold base. A first pre-cutting punch and a second pre-cutting punch are movably arranged near the center of the lower end face of the upper mold base. An insert is movably arranged at the center of the lower end face of the upper mold base. A main punch is arranged on the side of the lower end face of the upper mold base away from the upper backing plate. A stripper plate is arranged on the lower end face of the upper mold base near the lower end of the main punch. An extrusion punch and a chamfering punch are movably arranged at the center of the lower mold base. A pre-cutting blanking insert is arranged on one side of the upper end face of the lower mold base. An ejector is fixedly connected to one side of the upper end face of the lower mold base. A punch is provided on the upper end face of the ejector. A die insert and a die template are arranged on the side of the lower mold base near the ejector. A pre-cutting insert is fixedly connected to the lower end of the first pre-cutting punch. A toothed ring insert is fixedly connected to one side of the main punch. Through the above technical solution, the upper backing plate of the upper mold base strengthens the structural support. The pre-cutting insert at the lower end of the first pre-cutting punch works with the second pre-cutting punch to complete the step-by-step pre-cutting tooth shape, leaving sufficient allowance for subsequent tooth extrusion. The insert ensures the forming accuracy of the upper mold. The main punch and the tooth ring insert on one side work with the extrusion punch and chamfering punch of the lower mold base to simultaneously achieve tooth extrusion with reduced collapse and in-mold chamfering. The die insert and die plate complete the punching and blanking. The stripper plate assists in the unloading of the strip. The hole punch at the upper end of the ejector provides a positioning reference, solving the problem of excessive chamfering and collapse required for subsequent machining in traditional molds.
[0007] Furthermore, the material strip is disposed between the upper mold base and the lower mold base; The above technical solution uses a strip of material placed between the upper and lower die bases as a raw material carrier for tooth plate forming. This ensures that the punch and insert of the upper die and the corresponding parts of the lower die can accurately act on the strip of material, avoiding material deviation during processing and providing a basic guarantee for continuous processing of multiple processes.
[0008] Furthermore, the upper ends of the pre-cut blanking insert, extrusion punch, die insert, and die plate are all fitted to the material strip; Through the above technical solution, by having the pre-cut blanking insert, extrusion punch, die insert and the upper end of the die plate fit against the material strip, the lower die component can directly contact the material strip, and transmit pressure in processes such as pre-cutting, extrusion, chamfering and blanking, ensuring the processing accuracy of each process and avoiding forming deviations caused by gaps.
[0009] Furthermore, the lower end faces of the pre-cut insert, the second pre-cut punch, the insert body, and the unloading plate are all fitted to the material strip; Through the above technical solution, the pre-cut insert, the second pre-cut punch, the insert body and the lower end of the stripper plate are attached to the strip. When the upper die moves down, it can form a stable clamp and precise stamping of the strip. The pre-cut insert and the second pre-cut punch pre-cut the tooth shape in steps. The insert body assists in positioning. The stripper plate prevents the strip from sticking to the upper die, ensuring the continuity of processing.
[0010] Furthermore, the extrusion punch is fixedly connected to the chamfering punch; With the above technical solution, the extrusion punch and the chamfering punch are fixedly connected. When the lower die drives them to move upward, they can act on the corresponding areas of the strip simultaneously. The extrusion punch completes the tooth extrusion to reduce corner collapse, and the chamfering punch simultaneously completes the chamfering of the tooth plate. There is no need to drive them in two separate steps, which improves processing efficiency and avoids positional deviations caused by two processing steps.
[0011] Furthermore, the second pre-cutting punch is fixedly connected to multiple movable rods; Through the above technical solution, the No. 2 pre-cutting punch is fixedly connected to multiple movable rods. The movable rods can accurately transmit driving force, drive the No. 2 pre-cutting punch to move up and down stably, and ensure that when it cooperates with the pre-cutting insert of the No. 1 pre-cutting punch, the pre-cutting depth and position can be accurately controlled, ensuring the accuracy of the step-by-step pre-cutting tooth profile and avoiding tooth profile deviation caused by unstable punch movement.
[0012] This utility model has the following beneficial effects: This utility model proposes a toothed plate mold for small-collapse and chamfering forming. Through the extrusion forming principle and multi-process coordination, the tooth shape is pre-cut in two steps and the tooth is extruded after leaving a margin. This effectively reduces the size of the tooth collapse, avoids the problem of reduced functional area of the tooth shape due to increased material thickness, improves the functional area and service life of the product, and stabilizes product performance. The in-mold chamfering replaces the traditional machined chamfering, eliminating the need for subsequent manual processing, reducing labor costs and shortening the processing cycle. The pre-punching of the guide hole ensures process accuracy, and the precise cooperation of various punches and inserts greatly improves the product qualification rate. At the same time, the overall mold structure ensures forming stability through components such as the upper backing plate and ejector, further improving product safety performance. Attached Figure Description
[0013] Figure 1 This is an axial side view of a toothed plate mold for forming small collapsible and chamfered corners according to the present invention. Figure 2 This is a front view schematic diagram of a toothed plate mold for forming small collapsible corners and chamfers according to the present invention; Figure 3 This is a front sectional view of a toothed plate mold for forming small collapsible corners and chamfers, as proposed in this utility model. Figure 4 This is a cross-sectional axonometric view of a toothed plate mold for forming small collapsible and chamfered corners, as proposed in this utility model.
[0014] Explanation of reference numerals in the attached figures: 1. Upper die holder; 2. Upper backing plate; 3. No. 1 pre-cutting punch; 4. No. 2 pre-cutting punch; 5. Insert body; 6. Pre-cutting insert; 7. Pre-cut blanking insert; 8. Extrusion punch; 9. Chamfering punch; 10. Lower die holder; 11. Main punch; 12. Gear ring insert; 13. Stripper plate; 14. Material strip; 15. Die plate; 16. Die insert; 17. Hole punch; 18. Ejector. Detailed Implementation
[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0016] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 This utility model provides a specific implementation method: A toothed plate mold for small-angle chamfering includes an upper mold base 1, a lower mold base 10, and a strip 14. An upper pad 2 is fixedly connected to one side of the lower end face of the upper mold base 1. A first pre-cutting punch 3 and a second pre-cutting punch 4 are movably arranged near the middle of the lower end face of the upper mold base 1. An insert 5 is movably arranged at the middle of the lower end face of the upper mold base 1. A main punch 11 is arranged on the lower end face of the upper mold base 1 away from the upper pad 2. A stripper plate 1 is arranged on the lower end face of the upper mold base 1 near the lower end of the main punch 11. 3. An extrusion punch 8 and a chamfering punch 9 are movably arranged in the middle of the lower die base 10. A pre-cutting blanking insert 7 is provided on one side of the upper end face of the lower die base 10. An ejector 18 is fixedly connected to one side of the upper end face of the lower die base 10. A hole punch 17 is provided on the upper end face of the ejector 18. A die insert 16 and a die template 15 are provided on the side of the lower die base 10 near the ejector 18. A pre-cutting insert 6 is fixedly connected to the lower end of the first pre-cutting punch 3. A gear ring insert 12 is fixedly connected to one side of the main punch 11. The upper support structure is reinforced by the upper pad plate 2 of the upper mold base 1. The pre-cutting insert 6 at the lower end of the first pre-cutting punch 3 works with the second pre-cutting punch 4 to complete the step-by-step pre-cutting of the tooth shape, leaving sufficient allowance for subsequent tooth extrusion. The insert body 5 ensures the forming accuracy of the upper mold. The main punch 11 and the tooth ring insert 12 on one side work with the extrusion punch 8 and chamfering punch 9 of the lower mold base 10 to simultaneously achieve tooth extrusion with reduced corner collapse and in-mold chamfering. The die insert 16 and die plate 15 complete the punching and blanking. The stripper plate 13 assists the strip 14 in unloading. The hole punch 17 at the upper end of the ejector 18 provides a positioning reference, solving the problem of excessive chamfering and corner collapse that traditional molds require subsequent machining.
[0017] Reference Figure 2 , Figure 3 and Figure 4The strip 14 is positioned between the upper die holder 1 and the lower die holder 10. By placing the strip 14 between the upper die holder 1 and the lower die holder 10, it serves as the raw material carrier for tooth plate forming, ensuring that the punch and insert of the upper die and the corresponding components of the lower die can accurately act on the strip 14, preventing raw material misalignment during processing and providing a basic guarantee for multi-stage continuous processing. The upper ends of the pre-cutting blanking insert 7, the extrusion punch 8, the die insert 16, and the die plate 15 are all fitted against the strip 14. The upper ends of the punch 8, die insert 16, and die plate 15 are in contact with the strip 14, allowing the lower die components to directly contact the strip 14. This transmits pressure during pre-cutting, tooth extrusion, chamfering, and blanking processes, ensuring the machining accuracy of each step and preventing forming deviations due to gaps. The lower ends of the pre-cutting insert 6, the second pre-cutting punch 4, the insert body 5, and the stripper plate 13 are all in contact with the strip 14. The contact between the lower ends of the pre-cutting insert 6, the second pre-cutting punch 4, the insert body 5, and the stripper plate 13 and the strip 14 further enhances the precision of each process. When the upper die moves downward, it can stably clamp and precisely stamp the strip 14. The pre-cutting insert 6 and the second pre-cutting punch 4 pre-cut the tooth shape in stages. The insert body 5 assists in positioning. The stripper plate 13 prevents the strip 14 from sticking to the upper die, ensuring processing continuity. The extrusion punch 8 and the chamfering punch 9 are fixedly connected. When the lower die drives both to move upward, they can act simultaneously on the corresponding areas of the strip 14. The extrusion punch 8 completes the tooth extrusion to reduce corner collapse, and the chamfering punch 9 simultaneously completes the tooth extrusion. The plate chamfering eliminates the need for two separate drives, improving processing efficiency and avoiding positional deviations caused by two processing steps. The second pre-cutting punch 4 is fixedly connected to multiple movable rods. Through this connection, the movable rods can accurately transmit driving force, driving the second pre-cutting punch 4 to move stably up and down. This ensures that when it cooperates with the pre-cutting insert 6 of the first pre-cutting punch 3, it can accurately control the pre-cutting depth and position, guaranteeing the accuracy of the step-by-step pre-cutting tooth profile and avoiding tooth profile deviations caused by unstable punch movement.
[0018] Working principle: In use, the upper mold base 1 and the lower mold base 10 cooperate to complete multi-process forming. The material strip 14 is placed between the two and is in contact with the upper end of the pre-cut blanking insert 7, the extrusion punch 8, etc., and the lower end of the pre-cutting insert 6, the second pre-cutting punch 4, etc. First, the guide hole is punched through the hole punch 17 at the upper end of the ejector 18 to achieve positioning. Then, the upper mold base 1 drives the pre-cutting insert 6 at the lower end of the first pre-cutting punch 3 and the second pre-cutting punch 4 to pre-cut the material strip 14 in two steps. Then, the tooth ring insert 12 on one side of the main punch 11 cooperates with the extrusion punch 8 and the chamfering punch 9 of the lower mold base 10 to complete the in-mold chamfering and tooth extrusion process. Then, the punching blanking is completed through the die insert 16, the die plate 15 and the main punch 11. The stripper plate 13 assists in unloading. The upper pad 2 and the insert body 5 ensure the structural stability and forming accuracy of the upper mold base 1.
[0019] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.
[0020] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.
[0021] 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 specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific 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 toothed plate mold for forming small-angled and chamfered shapes, comprising an upper mold base (1), a lower mold base (10), and a strip (14), characterized in that: An upper pad (2) is fixedly connected to one side of the lower end face of the upper die base (1). A first pre-cutting punch (3) and a second pre-cutting punch (4) are movably arranged near the middle of the lower end face of the upper die base (1). An insert (5) is movably arranged at the middle of the lower end face of the upper die base (1). A main punch (11) is arranged on the side of the lower end face of the upper die base (1) away from the upper pad (2). A stripper plate (13) is arranged at the lower end of the lower end face of the upper die base (1) near the lower end of the main punch (11). An extrusion punch is movably arranged at the middle of the lower die base (10). The lower die holder (10) has a head (8) and a chamfering punch (9). A pre-cutting blanking insert (7) is provided on one side of the upper end face of the lower die holder (10). An ejector (18) is fixedly connected to one side of the upper end face of the ejector (18). A hole punch (17) is provided on the upper end face of the ejector (18). A die insert (16) and a die template (15) are provided on the side of the lower die holder (10) near the ejector (18). A pre-cutting insert (6) is fixedly connected to the lower end of the first pre-cutting punch (3). A gear ring insert (12) is fixedly connected to one side of the main punch (11).
2. The toothed plate mold for small-angle chamfering and beveling as described in claim 1, characterized in that: The strip (14) is disposed between the upper mold base (1) and the lower mold base (10).
3. The toothed plate mold for small-angle chamfering and beveling as described in claim 1, characterized in that: The upper ends of the pre-cut blanking insert (7), extrusion punch (8), die insert (16) and die plate (15) are all fitted to the material strip (14).
4. The toothed plate mold for small-angle chamfering and beveling as described in claim 1, characterized in that: The lower end faces of the pre-cut insert (6), the second pre-cut punch (4), the insert body (5), and the unloading plate (13) are all fitted to the material strip (14).
5. A toothed plate mold for small-angle chamfering and beveling as described in claim 1, characterized in that: The extrusion punch (8) is fixedly connected to the chamfering punch (9).
6. The toothed plate mold for small-angle chamfering and beveling as described in claim 1, characterized in that: The second pre-cutting punch (4) is fixedly connected to multiple movable rods.