Negative angle machining die
By designing a negative angle machining mold, and utilizing the elastic connection between the fixed clamping plate and the punch, as well as the guiding of the positioning components, the negative angle of the workpiece can be formed in one go. This solves the problem of existing molds requiring multiple forming processes, and reduces the forming process and maintenance costs.
Patent Information
- Application Number
- CN202423082111.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-12-13
AI Technical Summary
Existing negative angle bending dies require multiple forming processes, making them unsuitable for thicker or larger workpieces. Furthermore, the inserts are prone to damage, resulting in a complex manufacturing process and high maintenance costs.
Design a negative angle processing mold that achieves one-time negative angle forming by elastic connection between the fixed clamping plate and the punch, combined with the guidance and support of the positioning component. The elastic telescopic component facilitates the reset of the punch, reducing the forming process and the number of molds.
It enables one-time forming of the negative angle of the workpiece, reduces forming processes and time, lowers maintenance costs, and improves processing efficiency and reliability.
Smart Images
Figure CN223531161U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of stamping equipment technology, and in particular to a negative angle processing mold. Background Technology
[0002] In current parts processing, there is an operation involving bending workpieces. During the bending process, the angle formed after bending is less than 90°, which is called a negative angle. When using existing negative angle bending dies, if a negative angle is encountered, it usually needs to be formed in two stages: first bending the workpiece to 90° and then bending it to the required negative angle, which complicates the workpiece manufacturing process.
[0003] In existing technologies, to achieve one-time forming, inserts are typically inserted into the punch in negative angle bending dies, and the inserts bend the workpiece at a negative angle. However, due to the limitations of the punch size, this method is not suitable for thicker or larger workpieces because the force is insufficient. Furthermore, after the inserts rotate relative to the punch to form the negative angle, they are not easy to reset and are prone to damage.
[0004] Therefore, there is an urgent need for a negative angle machining mold to solve the above-mentioned technical problems. Utility Model Content
[0005] The purpose of this utility model is to provide a negative angle processing mold that can form a negative angle in one step, reducing the forming process, forming time and the number of molds, and reducing the later maintenance cost.
[0006] To achieve this objective, the present invention adopts the following technical solution:
[0007] Negative angle machining mold, including:
[0008] A fixing plate is provided on the processing end of a stamping equipment, and the fixing plate is provided with a mounting groove.
[0009] A punch is movably connected to the mounting groove, and the punch is elastically connected to the groove wall of the mounting groove; a bending groove is provided on the side of the punch away from the mounting groove;
[0010] A positioning component can be installed on the working platform of the stamping equipment. The positioning component is used to position and install the workpiece to be processed, and to guide and support the stamping direction of the punch and the bending angle of the workpiece to be processed.
[0011] Optionally, it also includes several elastic telescopic members, one end of which is elastically connected to the fixed clamping plate, and the other end passes through the fixed clamping plate and is fixedly connected to the punch.
[0012] Optionally, two elastic telescopic members are provided, and the two elastic telescopic members are respectively disposed between the top wall of the punch and the groove wall of the mounting groove, and between the side wall of the punch and the groove wall of the mounting groove.
[0013] Optionally, the elastic telescopic member includes a rod and an elastic element. One end of the rod is provided with a limiting step, and the other end passes through the fixed clamp and is fixedly connected to the punch. The elastic element is disposed between the limiting step and the fixed clamp.
[0014] Optionally, the other end of the elastic telescopic member and the punch are fixedly connected by threads.
[0015] Optionally, the bending groove is arc-shaped.
[0016] Optionally, the positioning component includes a pressure plate, a lower template, and a positioning block. The pressure plate is detachably connected to the lower template in the vertical direction to position and install the workpiece between the pressure plate and the lower template. The lower template and the positioning block are spaced apart to form a slide rail. The punch can slide in the slide rail and bend the workpiece to form a negative angle.
[0017] Optionally, the lower template has a bending slope on the side facing the positioning block, and the included angle between the bending slope and the mounting surface of the lower template is the same as the bending angle of the workpiece to be processed.
[0018] Optionally, the positioning block has a first abutting slope on the side facing the lower template, and the punch has a corresponding second abutting slope. The first abutting slope can abut against the second abutting slope to apply pressure to the punch.
[0019] Optionally, the distance between the positioning block and the lower template is adjustable.
[0020] The beneficial effects of this utility model are:
[0021] This utility model provides a negative angle processing die that directly connects the punch and the fixed clamping plate with elasticity. A positioning component guides and supports the connection, allowing the stamping equipment to move the fixed clamping plate and punch above the workpiece during negative angle bending. The punch then moves downwards along the positioning component until it contacts and presses down to bend the workpiece. The bending groove, through the sliding connection of the punch, changes position with the bending of the workpiece, making it more closely fit the bent portion. The positioning component provides pressure to the punch, improving the negative angle bending effect and achieving one-time negative angle processing. The elastic connection between the punch and the fixed clamping plate facilitates punch repositioning, reducing forming processes, forming time, and the number of dies, thus lowering subsequent maintenance costs. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the structure of the negative angle processing mold provided in a specific embodiment of this utility model when the negative angle processing is not performed;
[0023] Figure 2 This is a schematic diagram of the structure of the negative angle processing mold provided in a specific embodiment of the present invention when performing negative angle processing.
[0024] In the picture:
[0025] 10. Fixing clamp; 11. Mounting slot;
[0026] 20. Punch; 21. Bending groove; 22. Second abutment slope;
[0027] 30. Positioning component; 31. Pressure plate; 32. Lower template; 321. Bending slope; 33. Positioning block; 331. First abutment slope;
[0028] 40. Elastic telescopic component; 41. Rod body; 411. Limiting step; 42. Elastic component;
[0029] 200. Parts to be processed. Detailed Implementation
[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.
[0031] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0033] In the description of this embodiment, the terms "upper," "lower," "left," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0034] The following reference Figure 1 and Figure 2 This invention introduces the negative angle processing mold provided by this utility model.
[0035] It should be noted that the negative angle processing die needs to be set on a stamping equipment to perform negative angle bending on the workpiece 200. The stamping equipment can be a punch press, etc., and is not specifically limited here.
[0036] Please refer to Figure 1 and Figure 2 Specifically, the negative angle processing mold includes a fixed clamping plate 10, a punch 20, and a positioning component 30; the fixed clamping plate 10 can be set on the processing end of the stamping equipment, and the fixed clamping plate 10 is provided with a mounting groove 11; the punch 20 is movably connected to the mounting groove 11, and the punch 20 is elastically connected to the groove wall of the mounting groove 11; the side of the punch 20 away from the mounting groove 11 is provided with a bending groove 21; the positioning component 30 can be set on the working platform of the stamping equipment, and the positioning component 30 is used to position and install the workpiece 200 to be processed, and to guide and support the punching direction of the punch 20 and the bending angle of the workpiece 200 to be processed.
[0037] In this embodiment, the negative angle processing mold directly connects the punch 20 to the fixed clamping plate 10, and the two are elastic. The positioning component 30 provides guidance and support, so that when bending the negative angle of the workpiece 200, the stamping equipment drives the fixed clamping plate 10 and the punch 20 to move above the workpiece 200, and then moves downward along the guide of the positioning component 30 until it contacts the workpiece 200 and presses down to bend it. At this time, the bending groove 21 changes position with the bending of the workpiece 200 through the sliding connection of the punch 20, so that it fits the bending part of the workpiece 200 better. The positioning component 30 provides a certain pressure to the punch 20 to improve the negative angle bending effect of the punch 200, thereby realizing the one-time processing of the negative angle. The elastic connection between the punch 20 and the fixed clamping plate 10 facilitates the reset of the punch 20, reduces the forming process, forming time and number of molds, and reduces the later maintenance cost.
[0038] Specifically, the negative angle processing mold also includes several elastic telescopic components 40. One end of each elastic telescopic component 40 is elastically connected to the fixed clamping plate 10, and the other end passes through the fixed clamping plate 10 and is fixedly connected to the punch 20. This achieves an elastic connection between the punch 20 and the fixed clamping plate 10, allowing the punch 20 to rotate relative to the workpiece 200 during bending and to elastically return to its original position after completing the negative angle bending. This reduces the frequency of maintenance and manual resetting, and improves reliability.
[0039] Specifically, the elastic telescopic member 40 includes a rod 41 and an elastic member 42. One end of the rod 41 is provided with a limiting step 411, and the other end passes through the fixed clamping plate 10 and is fixedly connected to the punch 20. The elastic member 42 is disposed between the limiting step 411 and the fixed clamping plate 10. This enables the elastic telescopic member 40 to be telescopic relative to the fixed clamping plate 10, thereby making the punch 20 and the fixed clamping plate 10 elastically connected.
[0040] Optionally, the elastic element 42 is a spring, which has a simple structure, good elasticity, and low cost.
[0041] More specifically, the other end of the elastic telescopic member 40 is fixedly connected to the punch 20 by a thread, which can achieve a fixed connection between the two and facilitate the disassembly and replacement of the punch 20 and the elastic telescopic member 40 during subsequent maintenance.
[0042] Optionally, the other end of the elastic telescopic member 40 is provided with an external thread, and the punch 20 is provided with an internal thread. The external thread and the internal thread are threadedly connected to achieve a threaded fixed connection between the two.
[0043] Furthermore, two elastic telescopic members 40 are provided, one between the top wall of the punch 20 and the wall of the mounting groove 11, and the other between the side wall of the punch 20 and the wall of the mounting groove 11. Since the punch 20 may rotate during negative angle punching, providing elastic telescopic members 40 in both directions facilitates the reset of the punch 20 and also increases the connection between the punch 20 and the fixed clamping plate 10, making its punching more precise.
[0044] It should be noted that the elastic telescopic component 40 can also be a hydraulic telescopic device or other elastic telescopic structure, which only needs to make the punch 20 and the fixed clamping plate 10 elastically connected, and no specific limitation is made here.
[0045] Please continue to refer to Figure 1 and Figure 2 In this embodiment, the mounting groove 11 of the fixed clamping plate 10 is an L-shaped structure, which allows the top wall and one side wall of the punch 20 to be elastically connected to the fixed clamping plate 10. The bottom wall and other side walls are used to open bending grooves 21 to perform negative angle bending on the workpiece 200.
[0046] Optionally, the bending groove 21 of the punch 20 is arc-shaped, which better fits the outer surface shape of the workpiece 200 after bending, thereby ensuring that the punch 20 can apply a uniform punching force to the workpiece 200 for bending without damaging the workpiece 200.
[0047] In this embodiment, the positioning component 30 includes a pressure plate 31, a lower template 32, and a positioning block 33. The pressure plate 31 is detachably connected to the lower template 32 in the vertical direction to position and install the workpiece 200 between the pressure plate 31 and the lower template 32. The lower template 32 and the positioning block 33 are spaced apart to form a slide. The punch 20 can slide within the slide and bend the workpiece 200 to form a negative angle. The positioning component 30 not only installs and fixes the workpiece 200, but also forms a slide to guide the punching path of the punch 20. One side of the slide is the bent part of the workpiece 200, and the other end is the positioning block 33. The positioning block 33 can also apply a certain pressure to the punch 20, thereby ensuring the processing of negative angles for thicker workpieces, i.e., larger workpieces.
[0048] Optionally, the distance between the pressure plate 31 and the positioning block 33 is greater than the distance between the lower template 32 near the pressure plate 31 and the positioning block 33, so as to provide the punch 20 with the punching space for the workpiece 200 to be processed.
[0049] Specifically, the lower template 32 is provided with a bending slope 321 on the side facing the positioning block 33. The included angle between the bending slope 321 and the mounting surface of the lower template 32 is the same as the bending angle of the workpiece 200 to be processed, so that when the punch 20 performs stamping and bending on the workpiece 200, the workpiece 200 to be processed can be bent along the bending slope 321, thereby enabling the workpiece 200 to meet the bending angle preset.
[0050] It is understandable that when processing different negative angles, lower templates 32 with different inclination angles of bending slope 321 can be selected to adapt to the bending processing of different negative angles of the workpiece 200.
[0051] Specifically, the positioning block 33 has a first abutting inclined surface 331 on the side facing the lower template 32, and the punch 20 has a corresponding second abutting inclined surface 22. The first abutting inclined surface 331 can abut against the second abutting inclined surface 22 to apply pressure to the punch 20, so that the negative angle processing die can process negative angles on thicker workpieces, i.e. larger workpieces.
[0052] Optionally, the distance between the positioning block 33 and the lower template 32 is adjustable to meet the processing requirements of workpieces with different needs, thereby improving the adaptability of the negative angle processing mold.
[0053] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A negative angle machining mold, characterized in that, include: A fixing plate (10) can be set at the processing end of the stamping equipment, and the fixing plate (10) is provided with a mounting groove (11); A punch (20) is movably connected to the mounting groove (11), and the punch (20) is elastically connected to the groove wall of the mounting groove (11); a bending groove (21) is provided on the side of the punch (20) away from the mounting groove (11); The positioning component (30) can be set on the working platform of the stamping equipment. The positioning component (30) is used to position and install the workpiece (200) to be processed and to guide and support the stamping direction of the punch (20) and the bending angle of the workpiece (200).
2. The negative angle machining mold according to claim 1, characterized in that, It also includes several elastic telescopic members (40), one end of which is elastically connected to the fixed clamping plate (10), and the other end is inserted through the fixed clamping plate (10) and fixedly connected to the punch (20).
3. The negative angle machining mold according to claim 2, characterized in that, Two elastic telescopic members (40) are provided, and the two elastic telescopic members (40) are respectively disposed between the top wall of the punch (20) and the groove wall of the mounting groove (11) and between the side wall of the punch (20) and the groove wall of the mounting groove (11).
4. The negative angle machining mold according to claim 2, characterized in that, The elastic telescopic member (40) includes a rod (41) and an elastic member (42). One end of the rod (41) is provided with a limiting step (411), and the other end passes through the fixed clamp (10) and is fixedly connected to the punch (20). The elastic member (42) is disposed between the limiting step (411) and the fixed clamp (10).
5. The negative angle machining mold according to claim 2, characterized in that, The other end of the elastic telescopic member (40) and the punch (20) are fixedly connected by threads.
6. The negative angle machining mold according to claim 1, characterized in that, The bending groove (21) has an arc shape.
7. The negative angle machining mold according to any one of claims 1-6, characterized in that, The positioning component (30) includes a pressure plate (31), a lower template (32), and a positioning block (33). The pressure plate (31) is detachably connected to the lower template (32) in the vertical direction to position and install the workpiece (200) between the pressure plate (31) and the lower template (32). The lower template (32) and the positioning block (33) are spaced apart to form a slide. The punch (20) can slide in the slide and bend the workpiece (200) to form a negative angle.
8. The negative angle machining mold according to claim 7, characterized in that, The lower template (32) has a bending slope (321) on the side facing the positioning block (33), and the included angle between the bending slope (321) and the mounting surface of the lower template (32) is the same as the bending angle of the workpiece (200) to be processed.
9. The negative angle machining mold according to claim 7, characterized in that, The positioning block (33) has a first abutting slope (331) on the side facing the lower template (32), and the punch (20) has a corresponding second abutting slope (22). The first abutting slope (331) can abut against the second abutting slope (22) to apply pressure to the punch (20).
10. The negative angle machining mold according to claim 7, characterized in that, The distance between the positioning block (33) and the lower template (32) is adjustable.