Offset arc bending die
By designing a discontinuous arc bending die with arc segments and arc grooves, the problems of long production processes and high welding defect rates in the existing technology have been solved, achieving efficient forming and cost reduction of sheet metal discontinuous arcs.
Patent Information
- Application Number
- CN202423228284.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2034-12-26
AI Technical Summary
In the sheet metal industry, existing technologies for fabricating discontinuous arcs involve long production processes, high welding labor costs, and a high rate of welding misalignment and defects.
Design a discontinuous arc bending die including an upper die and a lower die. The die is provided with interlocking arc segments and arc grooves, with clearance to achieve one-time stamping.
The production process was reduced, costs were lowered, and the first-pass yield was increased to 100%.
Smart Images
Figure CN223862590U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sheet metal processing technology, specifically to a discontinuous arc bending die. Background Technology
[0002] Currently, in the sheet metal industry, the process of bending and fabricating discontinuous arcs involves separating two parts for processing, followed by welding and grinding. The existing technical steps are as follows:
[0003] 1. The discontinuity arc is split into two arcs;
[0004] 2. Cut and bend the two arcs separately;
[0005] 3. The two arcs are spliced and welded together;
[0006] 4. Grind away the weld spatter.
[0007] The above methods result in long production processes, high welding labor costs, and a high rate of defective products due to the ease with which welding can be misaligned and cause gaps. Utility Model Content
[0008] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a discontinuous arc bending die.
[0009] To achieve the above objectives, this utility model provides the following technical solution: a discontinuous arc bending die, comprising an upper die and a lower die that cooperate with each other. The upper die includes an upper die body, a fixed section disposed at the upper end of the upper die body, and an arc pressing die section disposed at the lower end of the lower die body. The fixed section is connected to the die clamp of the bending machine. The arc pressing die section includes two arc segments connected in parallel, with a discontinuous step provided between the connecting ends of the arc segments. The lower die includes a lower die body, an arc die groove disposed at the upper end of the lower die body, and a limiting section disposed at the lower end of the lower die body. The limiting section is connected to the die base of the bending machine. The arc die groove includes an arc groove one that cooperates with the arc segment one and an arc groove two that cooperates with the arc segment two. The connection between the arc groove one and the arc groove two is a stepped groove that cooperates with the discontinuous step between the connection of the arc segments one and the arc segment two.
[0010] In some embodiments, a clearance gap is provided on the arc mold groove corresponding to the arc groove one and the arc groove two.
[0011] In some embodiments, the upper mold is divided into upper mold body one and upper mold body two by arc segment one and arc segment two, and the lower mold is divided into lower mold body one and lower mold body two by arc groove one and arc groove two.
[0012] In some embodiments, the fixed section end face of the upper mold body is shaped like a 7, the upper horizontal left end of the fixed section is on the same plane as the upper left side face of the upper mold body, and the upper horizontal end and lower vertical end of the fixed section cooperate with the upper end face of the upper mold body to form a fixing groove.
[0013] In some embodiments, the limiting section at the lower end of the lower mold body has an inverted convex fit with the lower mold body.
[0014] In some embodiments, the clearance is provided at the lower mold end face corresponding to the deeper end of the arc groove on the arc mold groove.
[0015] Compared with the prior art, the beneficial effects of this utility model are: by setting the upper and lower dies in a cooperative manner, and by setting mutually cooperating arc segments, arc grooves and clearance gaps, it is possible to stamp sheet metal with a broken arc in one step.
[0016] Details of one or more embodiments of this application are set forth in the following drawings and description to make other features, objects and advantages of this application more readily apparent. The embodiments of this application will provide a detailed description and understanding of the application. Attached Figure Description
[0017] Figure 1 This is a drawing of the sheet metal bending product.
[0018] Figure 2 This is a schematic diagram of the structure of this utility model;
[0019] Figure 3 This is a front view of the upper and lower molds of this utility model in action.
[0020] In the diagram: 1. Product bending section one; 2. Product bending section two; 3. Upper mold body one; 4. Upper mold body two; 5. Lower mold body one; 6. Lower mold body two; 7. Arc pressing mold section; 8. Upper mold body; 9. Lower mold body; 10. Fixing section; 11. Arc mold groove; 12. Limiting section. Detailed Implementation
[0021] 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.
[0022] Please see Figure 1-3This utility model provides a technical solution: a discontinuous arc bending die, comprising an upper die and a lower die that cooperate with each other. The upper die includes an upper die body, a fixed section disposed at the upper end of the upper die body, and an arc pressing die section disposed at the lower end of the lower die body. The fixed section is connected to the die clamp of a bending machine. The arc pressing die section includes two arc segments connected in parallel, with a discontinuous step provided between the connecting ends of the arc segments. The lower die includes a lower die body, an arc die groove disposed at the upper end of the lower die body, and a... A limiting section is placed at the lower end of the lower mold body and is connected to the mold base of the bending machine. The arc mold groove includes an arc groove one that mates with arc segment one and an arc groove two that mates with arc segment two. The connection between arc groove one and arc groove two is set as a stepped groove that mates with the discontinuity step between the connection between arc segment one and arc segment two. A clearance gap is provided on the arc mold groove corresponding to the arc groove one and arc groove two. The clearance gap is set on the lower mold body end face of the arc mold groove corresponding to the arc groove with the greater depth.
[0023] The operation steps are as follows:
[0024] 1. The upper bending dies 3 and 4 are pre-clamped on the bending machine die clamp;
[0025] 2. Place the lower bending dies 5 and 6 on the bending machine die base;
[0026] 3. Align the molds, ensuring the centers of the upper and lower molds are aligned, and then fix the upper and lower molds;
[0027] 4. Adjust the back gauge of the bending machine to the bending position required by the product;
[0028] 5. Place the product between the upper and lower molds, and position the break point at the mold clearance (the break point has been formed in the previous process).
[0029] The upper mold is divided into upper mold body one and upper mold body two by arc segment one and arc segment two, and the lower mold is divided into lower mold body one and lower mold body two by arc groove one and arc groove two.
[0030] The upper bending die is designed with a stepped break, and the height difference is designed according to the actual break height of the product. The lower bending die is designed with a corresponding height difference.
[0031] The upper and lower molds are designed with steps (the height of the steps is adjusted according to the width of the break deformation).
[0032] The arc angle is designed according to the actual arc size of the product.
[0033] By designing the upper and lower molds as separate parts, it is possible to achieve matching with different height differences.
[0034] The fixed section at the upper end of the upper mold body is shaped like a 7. The upper horizontal left end of the fixed section is on the same plane as the upper left side of the upper mold body. The upper horizontal end and the lower vertical end of the fixed section are fitted together with the upper end of the upper mold body to form a fixing groove.
[0035] The fixed section design allows for easy positioning and fastening of the upper mold body.
[0036] The limiting section at the lower end of the lower mold body has an inverted convex shape fit with the lower mold body.
[0037] The design of the limiting end makes it easy to position and fasten the lower mold body.
[0038] Through this technical solution, during the production and processing process:
[0039] 1. Sheet metal does not need to be disassembled for processing, reducing the processing of one part and reducing the cost by approximately 0.8 yuan per piece.
[0040] 2. The welding and grinding process has been eliminated, reducing the cost by approximately 3.3 yuan per piece.
[0041] 3. One-time molding increases the first-pass yield to 100%.
[0042] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
[0043] 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 discontinuous circular arc bending die, characterized in that: The device includes an upper die and a lower die that cooperate with each other. The upper die includes an upper die body, a fixed section at the upper end of the upper die body, and an arc-shaped pressing die section at the lower end of the lower die body. The fixed section is connected to the die clamp of the bending machine. The arc-shaped pressing die section includes two arc segments connected in parallel. A stepped gap is provided between the connecting ends of arc segments one and arc segments two. The lower die includes a lower die body, an arc-shaped die groove at the upper end of the lower die body, and a limiting section at the lower end of the lower die body. The limiting section is connected to the die base of the bending machine. The arc-shaped die groove includes an arc groove one that cooperates with arc segment one and an arc groove two that cooperates with arc segment two. The connection between arc groove one and arc groove two is a stepped groove that cooperates with the stepped gap between the connection between arc segments one and arc segment two.
2. The discontinuity arc bending die according to claim 1, characterized in that: The circular arc mold groove has a clearance gap between arc groove one and arc groove two.
3. The discontinuity arc bending die according to claim 2, characterized in that: The upper mold is divided into upper mold body one and upper mold body two by arc segment one and arc segment two, and the lower mold is divided into lower mold body one and lower mold body two by arc groove one and arc groove two.
4. The discontinuity arc bending die according to claim 1, characterized in that: The fixed section at the upper end of the upper mold body is shaped like a 7. The upper horizontal left end of the fixed section is on the same plane as the upper left side of the upper mold body. The upper horizontal end and the lower vertical end of the fixed section are fitted together with the upper end of the upper mold body to form a fixing groove.
5. The discontinuity arc bending die according to claim 1, characterized in that: The limiting section at the lower end of the lower mold body has an inverted convex shape fit with the lower mold body.
6. The discontinuity arc bending die according to claim 3, characterized in that: The clearance is set on the lower mold body end face of the arc groove corresponding to the deeper end of the arc groove.