U-shaped bending die with R angle

Abstract

The utility model discloses a U-shaped bending die with an R angle, which adopts an R angle forming seat and a right-angle forming seat as a bending lower die, and in the bending process, a right-angle forming body of the right-angle forming seat moves downwards together with the R angle forming seat and moves horizontally relative to the R angle forming seat so as to form a right-angle area. Therefore, one-time forming of the U-shaped workpiece is achieved. The downward stroke of the right-angle forming body and the R-angle forming base is equal to the horizontal stroke of the right-angle forming body relative to the R-angle forming base, and resetting can be completed only through the elastic piece at the bottom of the R-angle forming base during demolding. By the adoption of the scheme, the bending quality is effectively improved, workers do not need to carry plates and change workbenches back and forth, the bending work efficiency is greatly improved, and the labor intensity of the workers is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of U-shaped bending mold with a radius (R-angle). Background Technology

[0002] like Figure 1 As shown, there is a U-shaped workpiece with a right-angle structure and a radius (R-angle) structure, and the two free ends of the U-shaped workpiece are arranged in parallel. In the prior art, the processing of such U-shaped workpieces from sheet metal mostly involves two bending processes: first, a right-angle bend is processed using a stamping die, and then a radius bend is processed. This processing method is labor-intensive, inefficient, and increases the processing cost of sheet metal.

[0003] Therefore, it is necessary to develop a bending die that can complete the right-angle and radius-angle bending process in one operation to solve the above-mentioned technical problems. Summary of the Invention

[0004] The technical problem to be solved by this invention is to develop a bending die that can complete the bending process of right angle and R-angle in one operation.

[0005] To solve the above-mentioned technical problems, the inventors, through practice and summarization, derived the technical solution of this invention, which adopts the following technical solution:

[0006] A U-shaped bending die with a radius (R-angle) includes an upper bending die and a lower bending die, wherein the lower bending die includes:

[0007] The base has two mounting areas: mounting area one and mounting area two.

[0008] R-angle forming mold base, the R-angle forming mold base is vertically slidably installed in the installation area 1;

[0009] A right-angle forming mold base includes a fixed guide body and a right-angle forming body. The fixed guide body is fixedly installed in the installation area two, and the right-angle forming body is slidably arranged along the fixed guide body and slides horizontally relative to the R-angle forming mold base.

[0010] An elastic element is installed at the bottom of the installation area and is used for vertical reset of the R-angle forming mold base.

[0011] Preferably, the fixed guide body is fixedly installed in the installation area two by bolts on the side, and a guide groove is provided on the side opposite to the right-angled forming body, and a guide structure adapted to the guide groove is provided at the bottom of the right-angled forming body.

[0012] Preferably, the guide groove is a groove that slopes downward at 45°, and the height travel of the right-angled forming body is equal to the horizontal travel.

[0013] Preferably, one side of the right-angle forming body relative to the R-angle forming die base is provided with a horizontal guide groove I and a guide protrusion I extending towards the side of the R-angle forming die base, and the R-angle forming die base is provided with a guide protrusion II matched with the horizontal guide groove I and a horizontal guide groove II matched with the guide protrusion I.

[0014] Preferably, the side of the base is provided with a vertically arranged waist-shaped hole, and a connecting bolt is arranged in the waist-shaped hole and used for connecting the R-angle forming die base.

[0015] Preferably, the bottom of the base is provided with a T-shaped hole, and a connecting bolt is arranged in the T-shaped hole, penetrates through an elastic element and is threadedly connected with the bottom of the R-angle forming die base.

[0016] Preferably, the two sides of the fixed guide body are provided with L-shaped baffles, the two groups of L-shaped baffles and the fixed guide body surround a guide groove relative to one side of the right-angle forming body, the bottom of the fixed guide body relative to one side of the right-angle forming body is provided with a limiting recess, and the right-angle forming body relative to one side of the fixed guide body is provided with a limiting protrusion matched with the limiting recess.

[0017] Preferably, the bending upper die comprises a first forming surface, a second forming surface, a third forming surface and an R-angle forming surface, the two ends of the R-angle forming surface are connected with the first forming surface and the second forming surface respectively, the first forming surface and the third forming surface are arranged in parallel and the included angle between the two and the horizontal plane is an acute angle.

[0018] Compared with the prior art, the present application has the following beneficial effects:

[0019] The R-angle forming base and the right-angle forming base are adopted as the bending lower die, the right-angle forming body of the right-angle forming base and the R-angle forming base descend together in the bending process, and relative horizontal movement relative to the R-angle forming base is used for forming a right-angle region, thereby realizing one-time forming of the U-shaped workpiece. The descending stroke of the right-angle forming body and the R-angle forming base is equal to the horizontal stroke of the right-angle forming body relative to the R-angle forming base, and the elastic element at the bottom of the R-angle forming base can be used for completing resetting during demolding. The bending quality is effectively improved, the workers do not need to carry the plate back and forth and switch workbenches, the bending work efficiency is greatly improved, and the labor intensity of the workers is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structure diagram of an existing U-shaped workpiece;

[0021] Figure 2 It is an initial state diagram of the overall structure of the bending die of the present application;

[0022] Figure 3 It is a base structure diagram of the bending die of the present application;

[0023] Figure 4 This is a structural diagram of the right-angle forming mold base of the bending mold of this utility model;

[0024] Figure 5 This is a structural diagram of the R-angle forming die base of the bending die of this utility model;

[0025] Figure 6 This is a diagram showing the overall structure of the bending die of this utility model during the forming of the sheet metal.

[0026] Figure 7 This is a diagram showing the state of a sheet metal forming process of a different structure of the bending die of this utility model.

[0027] Figure 8 This is a diagram showing the workpiece discharge state of a different structure of the bending die of this utility model.

[0028] In the picture:

[0029] 10. Bending upper die; 11. First forming surface; 12. Second forming surface; 13. Third forming surface; 14. R-angle forming surface;

[0030] 20. Bending die; 21. Base; 211. Waist-shaped hole; 212. T-shaped hole; 22. Round-angle forming die base; 221. Guide protrusion two; 222. Horizontal guide groove two; 23. Right-angle forming die base; 231. Fixed guide body; 2311. L-shaped baffle; 2312. Limiting groove; 2313. Limiting boss; 232. Right-angle forming body; 2321. Horizontal guide groove one; 2322. Guide protrusion one; 233. Guide structure; 24. Elastic element. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, 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 invention.

[0033] Example 1, as Figures 2 to 6 As shown, a U-shaped bending die with a radius (R-angle) includes an upper bending die 10 and a lower bending die 20, wherein the lower bending die 20 includes:

[0034] The base 21 is provided with an installation area I and an installation area II;

[0035] The R-angle forming die seat 22 is vertically slidingly installed in the installation area I;

[0036] The right-angle forming die seat 23 comprises a fixed guide body 231 and a right-angle forming body 232, the fixed guide body 231 is fixedly installed in the installation area II, and the right-angle forming body 232 is slidingly arranged along the fixed guide body 231 and horizontally slides relative to the R-angle forming die seat 22;

[0037] The elastic member 24 is installed at the bottom of the installation area I and is used for vertically resetting the R-angle forming die seat 22.

[0038] The fixed guide body 231 is fixedly installed in the installation area II through a bolt at the side, and is provided with a guide groove opposite to one side of the right-angle forming body 232, and the bottom of the right-angle forming body 232 is provided with a guide structure 233 fitted in the guide groove. The guide groove is a groove inclined downward by 45°, the height stroke of the right-angle forming body 232 is equal to the horizontal stroke, and the right-angle forming body 232 synchronously acts with the R-angle forming die seat 22, and is consistent with the horizontal stroke and the height stroke of the R-angle forming die seat 22.

[0039] In order to ensure that the two are relatively static in the height direction and relatively move in the horizontal direction, the right-angle forming body 232 is provided with a horizontal guide groove I 2321 and a guide protrusion I 2322 extending toward the side of the R-angle forming die seat 22 opposite to the side of the right-angle forming body 232, and the R-angle forming die seat 22 is provided with a guide protrusion II 221 matched with the horizontal guide groove I 2321 and a horizontal guide groove II 222 matched with the guide protrusion I 2322.

[0040] The side of the base 21 is provided with a vertically arranged waist-shaped hole 211, and a connecting bolt is installed in the waist-shaped hole 211 and is used for connecting the R-angle forming die seat 22.

[0041] The bottom of the base 21 is provided with a T-shaped hole 212, a connecting bolt is installed in the T-shaped hole 212, penetrates the elastic member 24 and is threadedly connected with the bottom of the R-angle forming die seat 22. After the bending action is completed, the R-angle forming die seat 22 and the right-angle forming body 232 can be synchronously reset through the elastic member 24.

[0042] The two sides of the fixed guide body 231 are provided with L-shaped baffles 2311, the two groups of L-shaped baffles 2311 and the fixed guide body 231 surround the side of the right-angle forming body 232 to form a guide groove, and the bottom of the side of the fixed guide body 231 opposite to the side of the right-angle forming body 232 is provided with a limiting recess 2312, and the side of the right-angle forming body 232 opposite to the side of the fixed guide body 231 is provided with a limiting protrusion 2313 matched with the limiting recess 2312.

[0043] The bending upper die 10 comprises a first forming surface 11, a second forming surface 12, a third forming surface 13, and an R-angle forming surface 14. The two ends of the R-angle forming surface 14 are connected with the first forming surface 11 and the second forming surface 12 respectively. The first forming surface 11 and the third forming surface 13 are arranged in parallel and the included angle between them and the horizontal plane is an acute angle, which is 60°.

[0044] In use, the plate is placed at a predetermined position on the bending lower die 20, and then the plate is bent by the downward movement of the bending upper die 10. During the bending process, after the R-angle forming surface 14 of the bending upper die 10 contacts the plate, it moves downward to bend the plate into the forming area between the R-angle forming seat 22 and the right-angle forming body 232. When the plate is fitted on the area of the R-angle forming seat 22 that is adapted to the R-angle forming surface 14, the R-angle forming seat 22 and the right-angle forming body 232 move downward to compress the elastic member 24, and at the same time, the right-angle forming body 232 moves horizontally relative to the R-angle forming seat 22 by an equal stroke under the combined action of the limiting boss 2313, the limiting groove 2312, the guide protrusion two 221, the horizontal guide groove two 222, the guide protrusion one 2322, and the horizontal guide groove one 2321, so as to bend and form the right-angle structure area of the plate in the horizontal direction. When the forming action is completed, the bending upper die 10 moves upward, the right-angle forming body 232 and the R-angle forming seat 22 are vertically reset, and at the same time, the right-angle forming body 232 also performs horizontal reset, so that the workpiece can be taken away from the bending upper die 10 laterally.

[0045] On the basis of the above, as shown in Figures 7 to 8 , the structure of the R-angle forming seat 22 is further improved. The area of the R-angle forming seat 22 that is adapted to the R-angle forming surface 14 is designed in a split structure, as shown in Figure 7 and Figure 8 . The bottom of the R-angle forming seat 22 is provided with a vertical mounting groove 223, and an elastic member 225 (spring column) is installed in the vertical mounting groove 223. The split forming block 224 is movably installed in the mounting groove 223 through the elastic member 225. In the natural state, the top of the split forming block 224 is flush with the top of the R-angle forming seat 22. The top of the right-angle forming body 232 is provided with a material ejection inclined surface for automatic ejection. After the plate forming action of the split forming block 224 is completed, the workpiece moves upward together with the bending upper die 10. After the split forming block 224 is reset, the workpiece moves upward with the bending upper die 10, and automatically falls and moves to the material ejection inclined surface on one side of the top of the right-angle forming body 232, so as to automatically eject the material through the material ejection inclined surface.

[0046] The above merely describes preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto. The alternatives can be partial structure, device, method step alternatives, or complete technical solutions. According to the technical solutions of the present application and the inventive concept, equivalent replacement or change should be covered within the protection scope of the present application.

Claims

1. A U-bending die with an R-angle comprising a bending upper die (10) and a bending lower die (20), characterized in that, The bending lower die (20) comprises: a base (21) provided with a mounting area I and a mounting area II; an R-angle forming die seat (22) vertically slidingly mounted in the mounting area I; a right-angle forming die seat (23) comprising a fixed guide body (231) fixedly mounted in the mounting area II and a right-angle forming body (232) slidingly arranged along the fixed guide body (231) and horizontally sliding relative to the R-angle forming die seat (22); a resilient member (24) mounted at the bottom of the mounting area I and used for vertically resetting the R-angle forming die seat (22).

2. A U-shaped bending die with an R-angle according to claim 1, characterized in that, The fixed guide body (231) is fixedly mounted in the mounting area II through bolts at the side and is provided with a guide groove relative to one side of the right-angle forming body (232), and the bottom of the right-angle forming body (232) is provided with a guide structure (233) fitted in the guide groove.

3. A U-bending die with an R-angle according to claim 2, characterized in that, The guide groove is a groove inclined downward by 45°, and the height stroke of the right-angle forming body (232) is equal to the horizontal stroke.

4. The U-shaped bending die with an R-angle according to claim 1, characterized in that, One side of the right-angle forming body (232) relative to the R-angle forming die seat (22) is provided with a horizontal guide groove I (2321) and a guide protrusion I (2322) extending toward one side of the R-angle forming die seat (22), and the R-angle forming die seat (22) is provided with a guide protrusion II (221) fitted with the horizontal guide groove I (2321) and a horizontal guide groove II (222) fitted with the guide protrusion I (2322).

5. The U-shaped bending die with an R-angle according to claim 1, characterized in that, The side of the base (21) is provided with a vertically arranged waist-shaped hole (211) in which a connecting bolt is mounted for connecting the R-angle forming die seat (22).

6. A U-shaped bending die with an R-angle according to claim 1, characterized in that, The bottom of the base (21) is provided with a T-shaped hole (212) in which a connecting bolt is mounted, penetrates the resilient member (24) and is threadedly connected with the bottom of the R-angle forming die seat (22).

7. A U-shaped bending die with an R-angle according to claim 2, characterized in that, Both sides of the fixed guide body (231) are provided with L-shaped baffles (2311), and the two groups of L-shaped baffles (2311) and the fixed guide body (231) oppositely relative to one side of the right-angle forming body (232) are enclosed to form the guide groove, and the bottom of the fixed guide body (231) oppositely relative to one side of the right-angle forming body (232) is provided with a limiting recess (2312), and one side of the right-angle forming body (232) oppositely relative to the fixed guide body (231) is provided with a limiting protrusion (2313) fitted with the limiting recess (2312).

8. The U-shaped bending die with an R-angle according to claim 1, characterized in that, The bending upper die (10) comprises a first forming surface (11), a second forming surface (12), a third forming surface (13) and an R-angle forming surface (14), both ends of the R-angle forming surface (14) are connected with the first forming surface (11) and the second forming surface (12) respectively, the first forming surface (11) and the third forming surface (13) are arranged in parallel and the included angle between the two and the horizontal plane is an acute angle.

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