High necked flange mold

Abstract

The utility model relates to a kind of high neck flange mould, including upper die plate, mould ring, punch and lower die holder, mould ring is located between upper die plate and lower die holder, punch is located in mould ring, lower die holder is equipped with flange cavity, flange cavity is constituted by upper chamber and lower chamber;Upper chamber is set as cylindrical, lower chamber is set as conical;The lower end surface and upper end surface of lower chamber are circular plane;The area of lower end surface is less than the area of upper end surface;Arc transition surface is equipped between upper chamber and lower chamber.Relative to prior art, the utility model reverses the flange cavity of lower die holder and the cavity of traditional mould, the neck of flange blank is placed downward when processing.Adopt this mould cavity setting mode, the deformation of blank in forging process can be more accurately controlled, thereby appropriately reduce the machining allowance reserved when flange blank is cut out, reduce the weight and size of blank, and then reduce the machining amount of machining, realize production efficiency improvement, production cost reduction.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically a high-neck flange mold. Background Technology

[0002] High-neck flanges are flanges with a higher neck height, resulting in increased rigidity and load-bearing capacity. They are commonly used in industries such as boilers and pressure vessels, petroleum, chemical, shipbuilding, pharmaceuticals, metallurgy, machinery, pipelines, and food processing. High-neck flanges are typically connected using nuts and bolts. Their manufacturing processes mainly include integral forging and machining; machining methods include rough turning on a conventional lathe and finish turning on a high-precision CNC lathe.

[0003] In current high-neck flange forging processes, the flange blank is typically placed with the neck facing upwards in the die before forging. This forging method is relatively easy to implement and does not place high demands on the flange die; the die cavity is designed with a smaller neck on top and a larger bottom surface on the bottom. However, high-neck flanges require a large machining allowance before forging, resulting in a heavier blank and more machining work, leading to low production efficiency and high production costs. Utility Model Content

[0004] The purpose of this invention is to provide a high-neck flange mold that helps reduce the weight and size of blanks, improves production efficiency, and reduces costs.

[0005] The objective of this utility model is achieved by adopting the following technical solution:

[0006] A high-neck flange mold includes an upper template, a mold ring, a punch, and a lower mold base. The mold ring is disposed between the upper template and the lower mold base, the punch is disposed inside the mold ring, and the lower mold base has a flange cavity, which is composed of an upper chamber and a lower chamber.

[0007] The upper chamber is cylindrical, and the lower chamber is conical;

[0008] The lower end face and the upper end face of the lower chamber are both circular planes; and the area of ​​the lower end face is smaller than the area of ​​the upper end face.

[0009] An arc-shaped transition surface is provided between the upper chamber and the lower chamber.

[0010] As a preferred embodiment of this utility model, the punch is a cylinder with a T-shaped cross-section, and the upper end face of the punch is larger than the lower end face of the punch.

[0011] As a preferred embodiment of this utility model, the lower end face of the punch is provided with a circular concave surface.

[0012] As a preferred embodiment of this utility model, the die ring is circular, and the center of the die ring has a cavity that matches the punch.

[0013] As a preferred embodiment of this invention, the outer surface of the mold ring is provided with an inclined surface.

[0014] As a preferred embodiment of this invention, the angle between the inclined surface and the mold ring axis is 5 degrees.

[0015] As a preferred technical solution of this utility model, the upper template is a circular plate with a circular convex surface on its lower end face and a circular concave surface at the center of the convex surface.

[0016] As a preferred embodiment of this utility model, the outer surface of the upper template is provided with an inclined surface; the angle between the inclined surface and the axis of the upper template is 5 degrees.

[0017] As a preferred embodiment of this utility model, the lower end of the lower cavity of the lower mold base is provided with a central hole; the outer surface of the lower mold base is provided with an inclined surface.

[0018] As a preferred embodiment of this utility model, the angle between the inclined surface and the axis of the lower mold base is 5 degrees.

[0019] The beneficial effects of this utility model are as follows: Compared with the prior art, this utility model reverses the flange cavity of the lower die base with the cavity of the traditional high-neck flange die, meaning that the neck of the flange blank is placed downwards in the die during processing. This die cavity configuration allows for more precise control of the deformation of the blank during forging, thereby appropriately reducing the machining allowance reserved when blanking the flange blank, reducing the weight and size of the blank, and consequently reducing the amount of machining required, thus improving production efficiency and reducing production costs. Attached Figure Description

[0020] Figure 1 This is a cross-sectional structural schematic diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the upper template of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the punch of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the mold ring of this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the lower mold base of this utility model;

[0025] Figure 6 yes Figure 5 A top-view structural diagram.

[0026] In the diagram: 1. Upper die plate; 2. Die ring; 3. Punch; 4. Lower die base; 5. Flange cavity; 6. Center hole; 11. Upper die plate concave surface; 12. Upper die plate inclined surface; 21. Die ring inclined surface; 31. Punch concave surface; 41. Lower die base inclined surface; 51. Upper cavity; 52. Lower cavity. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0028] like Figures 1 to 6 As shown, a high-neck flange mold includes an upper template 1, a mold ring 2, a punch 3, and a lower mold base 4. The mold ring 2 is located between the upper template 1 and the lower mold base 4, and the punch 3 is located inside the mold ring 2. The lower mold base 4 has a flange cavity 5, which is composed of an upper chamber 51 and a lower chamber 52. The upper chamber 51 is cylindrical, and the lower chamber 52 is conical. The lower end face and the upper end face of the lower chamber 52 are both circular planes, and the area of ​​the lower end face is smaller than the area of ​​the upper end face. An arc-shaped transition surface is provided between the upper chamber 51 and the lower chamber 52.

[0029] In this embodiment, the punch 3 is a cylinder with a T-shaped cross-section, and the upper end face of the punch 3 is larger than the lower end face of the punch; the lower end face of the punch 3 is provided with a circular punch concave surface 31.

[0030] The die ring 2 is circular, and the center of the die ring 2 has a cavity that matches the punch; the outer surface of the die ring 2 has a die ring inclined surface 21, and the angle between the die ring inclined surface 21 and the die ring axis is 5 degrees.

[0031] The upper template 1 is a circular plate with a circular convex surface on its lower end face and a circular upper template concave surface 11 at the center of the convex surface; the outer surface of the upper template 1 is provided with an upper template inclined surface 12; the angle between the inclined surface and the upper template axis is 5 degrees.

[0032] The lower end of the lower cavity of the lower mold base 4 is provided with a central hole 6; the outer surface of the lower mold base 4 is provided with a lower mold base inclined surface 41; the angle between the inclined surface and the axis of the lower mold base is 5 degrees.

[0033] This invention reverses the flange cavity of the lower die base with the cavity of the traditional high-neck flange die. That is, during processing, the neck of the flange blank is placed downward in the die. This allows for more precise control of the deformation of the blank during the forging process, thereby appropriately reducing the machining allowance reserved when blanking the flange blank, reducing the weight and size of the blank, and thus reducing the amount of machining, improving production efficiency and reducing production costs.

[0034] The above embodiments are merely illustrative of the concept and technical features of this utility model, and are intended to enable those skilled in the art to understand the technical solution and implementation method of the utility model. They should not be construed as limiting the protection scope of this utility model. All equivalent substitutions or changes made according to the technical solution of this utility model should be covered within the protection scope of this utility model.

Claims

1. A high-neck flange mold, comprising an upper template, a mold ring, a punch, and a lower mold base, wherein the mold ring is disposed between the upper template and the lower mold base, and the punch is disposed inside the mold ring, characterized in that: The lower mold base is provided with a flange cavity, which consists of an upper chamber and a lower chamber; The upper chamber is cylindrical, and the lower chamber is conical; The lower end face and the upper end face of the lower chamber are both circular planes; and the area of ​​the lower end face is smaller than the area of ​​the upper end face. An arc-shaped transition surface is provided between the upper chamber and the lower chamber.

2. The high-neck flange mold according to claim 1, characterized in that: The punch is a cylinder with a T-shaped cross-section, and the upper end face of the punch is larger than the lower end face of the punch.

3. The high-neck flange mold according to claim 2, characterized in that: The lower end face of the punch has a circular concave surface.

4. The high-neck flange mold according to claim 2, characterized in that: The die ring is circular, and the center of the die ring has a cavity that matches the punch.

5. The high-neck flange mold according to claim 4, characterized in that: The outer surface of the mold ring is provided with a bevel.

6. The high-neck flange mold according to claim 5, characterized in that: The angle between the inclined plane and the axis of the mold ring is 5 degrees.

7. The high-neck flange mold according to claim 1, characterized in that: The upper template is a circular plate with a circular convex surface on its lower end face and a circular concave surface at the center of the convex surface.

8. The high-neck flange mold according to claim 7, characterized in that: The outer surface of the upper template is provided with a slope; the angle between the slope and the axis of the upper template is 5 degrees.

9. The high-neck flange mold according to claim 1, characterized in that: The lower end of the lower cavity of the lower mold base is provided with a central hole; the outer surface of the lower mold base is provided with an inclined surface.

10. The high-neck flange mold according to claim 9, characterized in that: The angle between the inclined surface and the axis of the lower mold base is 5 degrees.

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