Precise stamping and flanging tool die for large thin-wall cone

Abstract

The utility model relates to the technical field of petrochemical engineering, in particular to a large thin-wall cone precise stamping and flanging tool die which comprises a press working table, a circle supporting plate and a press main oil cylinder, an upper die is fixedly installed at the bottom end of the press main oil cylinder, and six lower die equal-height pads are fixedly installed on the upper surface of the press working table at equal intervals. A lower die is fixedly installed on the upper surfaces of the lower die equal-height pads, six split equal-height pads are installed on the upper surface of the press workbench at equal intervals, the circular supporting plate is located in a large conical opening of the workpiece, three C-shaped chucks are installed at the large conical opening of the workpiece at equal intervals, and fixing bolts are installed on one sides of the C-shaped chucks in a threaded mode. Through the combination of the lower die equal-height pad, the split equal-height pad, the lower die and the upper die, the work efficiency of stamping and flanging of the small conical opening of the workpiece can be improved, allowance cutting correction of a straight edge after stamping and flanging forming of the small conical opening of a cone can be reduced, and the stamping and flanging precision of the small conical opening of the workpiece is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of petrochemical industry, in particular to a precision stamping and flanging tooling die for large thin-walled cones. Background Art

[0002] An extraction tower is a liquid-liquid mass transfer device commonly used in chemical industry, petroleum refining, environmental protection and other industrial sectors. The extractor used for continuous multiple extractions is a tower-type device called an extraction tower. The main internals of this device are a structure in which multiple large and small cones are embedded in each other. Among them, the wall thickness of the large internal cone is thin, the shape is large, and the small mouth of the cone is a stamping and flanging structure. During the stamping and flanging process of the small mouth of the cone, due to the thin wall thickness of the large internal cone, deformation is likely to occur during the lifting process. At the same time, the small mouth of the cone requires precise stamping and flanging, and the deviation of the straight edge length is controlled to be less than ±2 mm. Traditional stamping and flanging equipment is difficult to meet the requirements. For this reason, we propose a precision stamping and flanging tooling die for large thin-walled cones. Content of the Utility Model

[0003] The purpose of the utility model is to solve the defects existing in the prior art, and to propose a precision stamping and flanging tooling die for large thin-walled cones.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] Design a precision stamping and flanging tooling die for large thin-walled cones, including a press workbench, a circular support plate and a press main oil cylinder. The bottom end of the press main oil cylinder is fixedly installed with an upper die. Six lower die equal-height pads are fixedly installed on the upper surface of the press workbench at equal intervals. The upper surfaces of the lower die equal-height pads are jointly fixedly installed with a lower die. Six split equal-height pads are installed on the upper surface of the press workbench at equal intervals. The split equal-height pads are located between adjacent lower die equal-height pads. The circular support plate is located inside the large cone opening of the workpiece. Three C-shaped chucks are installed at equal intervals at the large cone opening of the workpiece. A fixing bolt is threadedly installed on one side of the C-shaped chuck.

[0006] Preferably, the split equal-height pad is detachably installed between the press workbench.

[0007] Preferably, the inclination a of the workpiece cone surface is the same as the inclination b of the inner hole of the lower die.

[0008] The precision stamping and flanging tooling die for large thin-walled cones proposed by the utility model has the following beneficial effects:

[0009] 1. The utility model can limit the circular support plate inside the workpiece through the C-shaped chuck and the fixing bolt. By using the circular support plate as a lifting point, deformation of the workpiece can be prevented during the lifting of the workpiece.

[0010] 2. Through the combination of the lower die equal-height pads, split equal-height pads, lower die, and upper die, the utility model can improve the working efficiency of stamping and flanging of the small conical opening of the workpiece, reduce a process of cutting and correcting the allowance of the straight edge after stamping and flanging the small conical opening of the cone, and ensure the accuracy of stamping and flanging of the small conical opening of the workpiece.

[0011] Of course, it is not necessary for any product implementing the utility model to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following will briefly introduce the drawings required for describing the embodiments. Obviously, the drawings in the following description are only some embodiments of the utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0013] Figure 1 It is a schematic diagram of the mating structure of the lower die equal-height pad, split equal-height pad, lower die, and workpiece of the large thin-walled cone precision stamping and flanging tooling die proposed by the utility model;

[0014] Figure 2 It is the large thin-walled cone precision stamping and flanging tooling die proposed by the utility model Figure 1 Schematic diagram of the A-A structure;

[0015] Figure 3 It is a schematic diagram of the mating structure of the upper die and the workpiece of the large thin-walled cone precision stamping and flanging tooling die proposed by the utility model;

[0016] Figure 4 It is a schematic diagram of the structure of the circular support plate of the large thin-walled cone precision stamping and flanging tooling die proposed by the utility model;

[0017] Figure 5 It is a schematic diagram of the workpiece structure after stamping and flanging by the utility model.

[0018] In the figure: C-type chuck 1, fixing bolt 2, circular support plate 3, lower die equal-height pad 4, split equal-height pad 5, lower die 6, press workbench 7, upper die 8, press main oil cylinder 9. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the utility model with reference to the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all of them. Based on the embodiments of the utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the utility model.

[0020] Refer toFigures 1 - 5 A precision stamping and flanging tooling die for large thin-walled cones, comprising a press workbench 7, a circular support plate 3 and a press main oil cylinder 9. The bottom end of the press main oil cylinder 9 is fixedly installed with an upper die 8. Six lower die equal-height pads 4 are fixedly installed at equal intervals on the upper surface of the press workbench 7. The lower die 6 is fixedly installed on the common upper surface of the lower die equal-height pads 4. Six split equal-height pads 5 are installed at equal intervals on the upper surface of the press workbench 7. The split equal-height pads 5 are located between adjacent lower die equal-height pads 4. The circular support plate 3 is located inside the large cone opening of the workpiece. Three C-shaped chucks 1 are installed at equal intervals at the large cone opening of the workpiece. A fixing bolt 2 is threadedly installed on one side of the C-shaped chuck 1. The C-shaped chuck 1 and the fixing bolt 2 can fix the workpiece to the C-shaped chuck 1. The C-shaped chuck 1 can block the circular support plate 3 to prevent the circular support plate 3 from detaching from the workpiece. At the same time, the workpiece can be lifted by the circular support plate 3 to avoid workpiece deformation caused by insufficient workpiece stiffness.

[0021] The split equal-height pad 5 is detachably installed between the press workbench 7, facilitating the removal of the split equal-height pad 5 from the press workbench 7.

[0022] The inclination a of the workpiece cone surface is the same as the inclination b of the inner hole of the lower die 6, which can guide the lower cone of the workpiece into the working surface of the inner circle of the lower die 6.

[0023] A circumferential equidistant detection line is drawn 100 mm away from the lower cone opening on the outer side of the workpiece.

[0024] Working principle: During use, first, a circumferential equidistant detection line is drawn 100 mm away from the lower cone opening on the outer side of the workpiece. Then, as Figure 1 and Figure 2 the lower die equal-height pads 4 are fixed on the press workbench 7, and the lower die 6 is fixed to the lower die equal-height pads 4. The workpiece is lifted and placed in the lower die 6 through the lifting points on the circular support plate 3. Then, the split equal-height pads 5 are placed above the press workbench 7 to verify the parallelism between the lower cone opening of the workpiece and the press workbench 7. The press main oil cylinder 9 is started, and the press main oil cylinder 9 drives the upper die 8 to move. As Figure 3 when the upper die 8 contacts the workpiece and before pressing it, check the horizontality of the inspection line on the outer side of the cone, then remove the split equal-height pads 5 and perform stamping and flanging on the small cone opening of the cone.

[0025] In the description of this specification, the description with reference to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0026] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. Obviously, according to the content of this specification, many modifications and variations can be made. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the relevant art can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A large-scale thin-walled cone precision stamping and flanging tooling die, comprising a press workbench (7), a supporting circular plate (3) and a press main cylinder (9), characterized in that: An upper die (8) is fixedly mounted on the bottom end of the main oil cylinder (9) of the press, six lower die contour pads (4) are fixedly mounted at equal intervals on the upper surface of the press workbench (7), a lower die (6) is fixedly mounted on the upper surface of the lower die contour pads (4), six split contour pads (5) are evenly mounted on the upper surface of the press workbench (7), the split contour pads (5) are located between adjacent lower die contour pads (4), the support circular plate (3) is located inside the large cone mouth of the workpiece, three C-type chucks (1) are evenly mounted on the large cone mouth of the workpiece, and a fixing bolt (2) is threadedly mounted on one side of the C-type chuck (1).

2. The large-scale thin-walled cone precision stamping and flanging tooling die according to claim 1 is characterized in that: The split equal-height pad (5) and the press workbench (7) are detachably mounted.

3. The large-scale thin-walled cone precision stamping and flanging tooling die according to claim 1 is characterized in that: The inclination a of the workpiece conical surface is the same as the inclination b of the inner hole of the lower die (6).

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