Shell flanging die

By adopting hydraulic cylinders, slide chutes, U-shaped seats and motors in the flange mold, the rapid positioning and flange of the shell is achieved, solving the positioning and quality problems of the existing molds in shell processing in different sizes and shapes, and improving the flange efficiency and quality.

CN222856397UActive Publication Date: 2025-05-13YANGZHOU LISONG MOULD CO LTD
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Patent Information

Application Number
CN202421873053.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-05
Publication Date
2025-05-13
Estimated Expiration
2034-08-05

AI Technical Summary

Technical Problem

When existing flange molds flange processing on shells of different sizes, they cannot quickly position and adjust, resulting in unstable flange quality and cannot meet the processing needs of different sizes and shapes.

Method used

A shell flange mold is designed, which adopts mechanical structures such as hydraulic cylinders, slide grooves, U-shaped seats and motors. The slider is driven to slide through the hydraulic cylinders, and the inclination angle of the fixed seat is adjusted by the U-shaped seats and the motors to achieve rapid positioning and lateral movement of the shell to ensure that the shell is fitted with the lower mold and flange.

Benefits of technology

It realizes rapid positioning and flange of shells of different sizes and shapes, improves flange quality and efficiency, and meets diverse processing needs.

✦ Generated by Eureka AI based on patent content.

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    Figure CN222856397U_ABST
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Abstract

The utility model discloses a shell flanging die, relates to the field of flanging dies, and aims to solve the problems that an existing fixing structure cannot be adjusted, a shell can be rapidly fixed, the fixed shell cannot be adjusted, and when shells of different sizes are subjected to flanging treatment, rapid positioning of the shells cannot be ensured. According to the technical scheme, the machining device is characterized by comprising a machining table, a base is arranged above the machining table, a first mounting base is arranged above the base, a lower die is arranged at the upper end of the first mounting base, a mounting frame is arranged above the outer portion of the base, and a second mounting base is arranged on the inner side of the mounting frame; and an upper die is arranged at the lower end of the second mounting base, a U-shaped base is arranged above the machining table, a fixing base is arranged above the U-shaped base, and a connecting base is arranged below the fixing base, so that the fixing structure can be adjusted according to actual requirements, a fixed shell is attached to the lower die, and the shell flanging quality is guaranteed.
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Description

Technical Field

[0001] The utility model relates to the technical field of flanging dies, in particular to a shell flanging die. Background Art

[0002] A flanging die is a forming die that makes the edge of the flat or curved part of the blank turn up along a certain curve to form an upright straight edge. The flanging die is a special stamping die used for flanging metal sheets. Through the pressing action of the die, the edge of the material is plastically deformed to achieve the required shape and size requirements. During the stamping process, the edge of the material is turned up along a certain curve to form the required shape or structure. In view of the hardness and other characteristics of thin metal shells, in order to achieve structures such as injection molding buckles, it is necessary to perform small-sized flanging processing on thin metal shells. The processing of this thin metal shell usually adopts a stamping process, such as punching holes in the sheet and flanging the edge of the sheet.

[0003] After searching, in the prior art, the publication number CN10526883B discloses a flanging die for an air filter housing, including an arc flanging die and a straight-edge flanging die, wherein the arc flanging die includes an upper die assembly I and a lower die assembly I, and the straight-edge flanging die includes an upper die assembly II, a lower die assembly II and a material pressing and positioning assembly. The arc flanging die is installed obliquely, and can realize the processing of parts in different stamping directions, that is, the die can flanging the R170 and R20 arc edges of the air filter housing at the same time, which not only solves the problem that the two flanging processes cannot be accurately positioned and affect the connection of the two arc flanging sections, but also saves a flanging process, effectively improving the production efficiency. The straight-edge flanging die of the present invention is positioned by using the R170 arc edge that has been turned out by the arc flanging die, without positioning reference error, and the turned-out straight edge and the edge turned out by the first arc flanging die are well connected and no manual shaping is required.

[0004] However, the device and the prior art still have the following defects: the fixing structure cannot be adjusted, the shell can be quickly fixed, but the fixed shell cannot be adjusted; when flanging shells of different sizes, the shell cannot be quickly positioned, which affects the smooth progress of subsequent processes, the flanging quality cannot be guaranteed, and cannot meet the use requirements. Utility Model Content

[0005] The utility model aims to provide a shell flanging die.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A shell flanging mold comprises a processing table, a base is arranged above the processing table, and the base is fixedly connected to the processing table, a first mounting seat is arranged above the base, a lower mold is arranged at the upper end of the first mounting seat, a mounting frame is arranged above the outside of the base, and the mounting frame is fixedly connected to the processing table, a second mounting seat is arranged on the inner side of the mounting frame, an upper mold is arranged at the lower end of the second mounting seat, a first hydraulic cylinder is arranged above the second mounting seat, and the first hydraulic cylinder is fixedly connected to the mounting frame and the second mounting seat, a second slide is arranged at the upper end of the processing table, a second slider is arranged inside the second slide, and the second slider is slidably connected to the processing table, a U-shaped seat is arranged above the processing table, and the lower end of the U-shaped seat is fixedly connected to the second slider, a fixed seat is arranged above the U-shaped seat, a connecting seat is arranged below the fixed seat, and the connecting seat is fixedly connected to the fixed seat, connecting rods are arranged on both sides of the connecting seat, two connecting rods are arranged, and one end of the connecting rod is fixedly connected to the connecting seat, and the other end of the connecting rod is rotatably connected to the U-shaped seat.

[0008] By adopting the above technical solution, a fixed seat is used to clamp and fix the shell from the bottom, the connecting seat and the U-shaped seat are rotatably connected by a connecting rod, the inclination angle of the fixed shell is adjusted, the second slider slides along the second slide groove, the fixed shell is moved laterally, the flanged end of the shell is attached to the lower die, the first hydraulic cylinder is driven to drive the upper die to descend, the descending upper die contacts the shell to apply extrusion force, the edge of the shell is flipped open by the lower die and the upper die, and the shell is flanging.

[0009] Furthermore, a splint is provided on the inner side of the fixing seat, and the splint is movably connected to the fixing seat, an electric push rod is provided on one side of the fixing seat, and the electric push rod is connected to the fixing seat by screws, and the telescopic end of the electric push rod is fixedly connected to the splint.

[0010] By adopting the above technical solution, the electric push rod is driven to drive the clamping plate to move, and the shells of different thicknesses can be quickly clamped and fixed with the help of the fixing seat and the clamping plate, thereby ensuring the stability of the flanging process.

[0011] Furthermore, a motor is provided on one side of the U-shaped seat, and the motor is connected to the U-shaped seat via screws, and an output end of the motor is connected to one end of a connecting rod.

[0012] By adopting the above technical solution, the motor is turned on to drive the connecting rod to rotate, and the rotation of the connecting rod drives the connecting seat to rotate, thereby changing the inclination angle of the fixed seat to achieve the inclination adjustment of the fixed shell.

[0013] Furthermore, a second hydraulic cylinder is provided on one side of the processing table, and the second hydraulic cylinder is connected to the processing table by screws, the second hydraulic cylinder is arranged inside the second slide groove, and the telescopic end of the second hydraulic cylinder is fixedly connected to the second slider, and the cross-sections of the second slide groove and the second slider are both T-shaped.

[0014] By adopting the above technical solution, the second hydraulic cylinder is driven to drive the second slide block to slide along the second slide groove, so that the fixed shell is moved laterally, and the fixed shell is better fitted with the lower mold for flanging.

[0015] Furthermore, a connecting groove is provided at the upper end of the first mounting seat and a lower end of the second mounting seat, a connecting block is provided at the lower end of the lower mold and the upper end of the upper mold, and the connecting block is integrated with the lower mold and the upper mold, the connecting block is arranged corresponding to the connecting groove, and the connecting block is plugged into the first mounting seat and the second mounting seat, a connecting bolt is provided on one side of the first mounting seat and the second mounting seat, and the connecting bolt is threadedly connected to the first mounting seat and the second mounting seat, and the connecting bolt is through-set with the connecting block.

[0016] By adopting the above technical solution, the connecting block is aligned with the connecting groove and inserted, and the lower mold and the upper mold are pre-connected to the first mounting seat and the second mounting seat respectively. The connecting bolt limits the installed lower mold and upper mold to ensure the stability of the connected lower mold and upper mold.

[0017] Furthermore, a lifting chamber is provided inside the base, the lower end of the first mounting seat extends into the lifting chamber, and the first mounting seat is slidably connected to the base, a third hydraulic cylinder is provided inside the lifting chamber, and the third hydraulic cylinder is fixedly connected to the base and the first mounting seat, and support legs are provided below the processing table, four support legs are provided, and the support legs are connected to the processing table by screws.

[0018] By adopting the above technical solution, the third hydraulic cylinder is driven to drive the first mounting seat to move up and down in the lifting chamber, thereby changing the height of the lower mold, making it convenient to fit shells of different sizes to the lower mold.

[0019] Furthermore, a first slide groove is provided on the inner side wall of the mounting frame, and two first slide grooves are provided. A first slider is provided inside each of the two first slide grooves, and the first slider is slidably connected to the mounting frame. The two first sliders are provided on both sides of the second mounting seat, and the first slider is fixedly connected to the second mounting seat.

[0020] By adopting the above technical solution, the first sliding block slides along the first sliding groove as the upper mold is raised and lowered, guiding and limiting the raised and lowered upper mold to ensure smooth raising and lowering of the upper mold.

[0021] In summary, the beneficial technical effects of the utility model are:

[0022] 1. The second slide, U-shaped seat, motor, fixed seat, clamp, electric push rod, second hydraulic cylinder and connecting seat are adopted. The lower end of the shell is inserted into the fixed seat, and the electric push rod is driven to drive the clamp to move. With the help of the fixed seat and the clamp, the shell is quickly clamped and fixed from the bottom. The motor is turned on to drive the connecting rod to rotate. As the connecting rod rotates, the connecting seat is driven to turn to change the inclination angle of the fixed seat, and the second hydraulic cylinder is driven to drive the second slider to slide along the second slide, so that the fixed shell is moved laterally, and the upper port of the fixed shell is fitted with the lower die to meet the flanging processing of different curvatures and angles;

[0023] 2. A connection groove, a connection block and a connection bolt are used. The connection block is aligned with the connection groove and inserted. The lower mold and the upper mold are pre-connected with the first mounting seat and the second mounting seat respectively. The connection bolt limits the installed lower mold and the upper mold to ensure the stability of the connected lower mold and the upper mold, which is convenient for replacing molds of different models for flanging processing;

[0024] 3. A base, a first mounting seat, a lifting chamber and a third hydraulic cylinder are used. The third hydraulic cylinder drives the first mounting seat to move up and down in the lifting chamber, changes the height of the lower die, and facilitates flanging of shell flanging parts of different sizes with the lower die, thereby improving the efficiency of shell flanging. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification, but do not constitute a limitation of the present invention. In the accompanying drawings:

[0026] Figure 1 It is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a practical Figure 1 A partial enlarged view of area A;

[0028] Figure 3 This is a diagram showing the connection relationship between the first mounting seat and the base of the present invention;

[0029] Figure 4 This is a connection relationship diagram of the lower die and the upper die of the utility model and the first mounting seat and the second mounting seat;

[0030] Figure 5 This is a connection relationship diagram of the practical U-shaped seat, the processing table and the fixed seat.

[0031] In the figure, 1, processing table; 2, supporting leg; 3, mounting frame; 4, base; 5, first mounting seat; 6, lower die; 7, second mounting seat; 8, upper die; 9, first slider; 10, first slide groove; 11, first hydraulic cylinder; 12, second slide groove; 13, U-shaped seat; 14, motor; 15, fixed seat; 16, clamping plate; 17, electric push rod; 18, second hydraulic cylinder; 19, connecting seat; 20, lifting chamber; 21, third hydraulic cylinder; 22, connecting groove; 23, connecting block; 24, connecting bolt; 25, second slider; 26, connecting rod. DETAILED DESCRIPTION

[0032] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] See also Figure 1-5The utility model provides a technical solution: a shell flanging mold, including a processing table 1, a base 4 is arranged above the processing table 1, and the base 4 is fixedly connected to the processing table 1, a first mounting seat 5 is arranged above the base 4, and a lower mold 6 is arranged on the upper end of the first mounting seat 5, a mounting frame 3 is arranged above the outside of the base 4, and the mounting frame 3 is fixedly connected to the processing table 1, a second mounting seat 7 is arranged on the inner side of the mounting frame 3, and an upper mold 8 is arranged at the lower end of the second mounting seat 7, a first hydraulic cylinder 11 is arranged above the second mounting seat 7, and the first hydraulic cylinder 11 is fixedly connected to the mounting frame 3 and the second mounting seat 7, a second slide 12 is arranged at the upper end of the processing table 1, a second slide 25 is arranged inside the second slide 12, and the second slide 25 is slidably connected to the processing table 1, a U-shaped seat 13 is arranged above the processing table 1, and the lower end of the U-shaped seat 13 is connected to the second slide 2 5 is fixedly connected, a fixing seat 15 is arranged above the U-shaped seat 13, a connecting seat 19 is arranged below the fixing seat 15, and the connecting seat 19 is fixedly connected to the fixing seat 15, connecting rods 26 are arranged on both sides of the connecting seat 19, two connecting rods 26 are arranged, and one end of the connecting rod 26 is fixedly connected to the connecting seat 19, and the other end of the connecting rod 26 is rotatably connected to the U-shaped seat 13, the fixing seat 15 is used to clamp and fix from the bottom of the shell, the connecting seat 19 and the U-shaped seat 13 are rotatably connected through the connecting rod 26, the inclination angle of the fixed shell is adjusted, the second slider 25 slides along the second slide groove 12, the fixed shell is moved laterally, the flanged end of the shell is attached to the lower die 6, the first hydraulic cylinder 11 is driven to drive the upper die 8 to descend, the descending upper die 8 contacts the shell to apply extrusion force, the edge of the shell is turned over by the lower die 6 and the upper die 8, and the shell is flanging.

[0035] See also Figure 1 A splint 16 is provided on the inner side of the fixing seat 15, and the splint 16 is movably connected to the fixing seat 15. An electric push rod 17 is provided on one side of the fixing seat 15, and the electric push rod 17 is connected to the fixing seat 15 by screws. The telescopic end of the electric push rod 17 is fixedly connected to the splint 16, and the electric push rod 17 drives the splint 16 to move. With the help of the fixing seat 15 and the splint 16, shells of different thicknesses can be quickly clamped and fixed to ensure the stability of the flanging process.

[0036] See also Figure 1 , Figure 2 and Figure 5 A motor 14 is provided on one side of the U-shaped seat 13, and the motor 14 is connected to the U-shaped seat 13 by screws. The output end of the motor 14 is connected to one end of the connecting rod 26. The motor 14 drives the connecting rod 26 to rotate. As the connecting rod 26 rotates, the connecting seat 19 is driven to rotate, thereby changing the inclination angle of the fixed seat 15 to achieve the fixed shell inclination adjustment.

[0037] See also Figure 1 and Figure 5A second hydraulic cylinder 18 is provided on one side of the processing table 1, and the second hydraulic cylinder 18 is connected to the processing table 1 by screws. The second hydraulic cylinder 18 is arranged inside the second slide groove 12, and the telescopic end of the second hydraulic cylinder 18 is fixedly connected to the second slider 25. The cross-sections of the second slide groove 12 and the second slider 25 are both T-shaped. The second hydraulic cylinder 18 drives the second slider 25 to slide along the second slide groove 12, moves the fixed shell laterally, and better fits the fixed shell with the lower mold 6 for flanging.

[0038] See also Figure 1 , Figure 3 and Figure 4 , the upper end of the first mounting seat 5 and the lower end of the second mounting seat 7 are both provided with a connecting groove 22, the lower end of the lower mold 6 and the upper end of the upper mold 8 are both provided with a connecting block 23, and the connecting block 23 is integrated with the lower mold 6 and the upper mold 8, the connecting block 23 is arranged corresponding to the connecting groove 22, and the connecting block 23 is plugged into the first mounting seat 5 and the second mounting seat 7, one side of the first mounting seat 5 and the second mounting seat 7 is provided with a connecting bolt 24, and the connecting bolt 24 is threadedly connected to the first mounting seat 5 and the second mounting seat 7, the connecting bolt 24 and the connecting block 23 are through-set, the connecting block 23 is aligned with the connecting groove 22 and inserted, the lower mold 6 and the upper mold 8 are respectively connected to the first mounting seat 5 and the second mounting seat 7 in advance, the connecting bolt 24 limits the installed lower mold 6 and the upper mold 8 to ensure the stability of the connected lower mold 6 and the upper mold 8.

[0039] See also Figure 1 and Figure 3 A lifting chamber 20 is provided inside the base 4, the lower end of the first mounting seat 5 extends into the lifting chamber 20, and the first mounting seat 5 is slidably connected to the base 4, a third hydraulic cylinder 21 is provided inside the lifting chamber 20, and the third hydraulic cylinder 21 is fixedly connected to the base 4 and the first mounting seat 5, a supporting leg 2 is provided below the processing table 1, four supporting legs 2 are provided, and the supporting leg 2 is connected to the processing table 1 by screws, and the third hydraulic cylinder 21 drives the first mounting seat 5 to rise and fall in the lifting chamber 20, thereby changing the height of the lower mold 6, and facilitating the fitting of shells of different sizes to the lower mold 6.

[0040] See also Figure 1 A first slide groove 10 is provided on the inner side wall of the mounting frame 3, and two first slide grooves 10 are provided. A first slider 9 is provided inside the two first slide grooves 10, and the first slider 9 is slidably connected to the mounting frame 3. The two first sliders 9 are provided on both sides of the second mounting seat 7, and the first slider 9 is fixedly connected to the second mounting seat 7. The first slider 9 slides along the first slide groove 10 as the upper mold 8 is lifted and lowered, and the lifted upper mold 8 is guided and limited to ensure that the upper mold 8 is lifted and lowered smoothly.

[0041] Working principle: insert the lower end of the shell into the fixed seat 15, drive the electric push rod 17 to drive the clamping plate 16 to move, and clamp the shell from the bottom with the help of the fixed seat 15 and the clamping plate 16. The third hydraulic cylinder 21 drives the first mounting seat 5 to rise and fall in the lifting chamber 20 to change the height of the lower mold 6. Turn on the motor 14 to drive the connecting rod 26 to rotate. As the connecting rod 26 rotates, the connecting seat 19 is driven to turn to change the inclination angle of the fixed seat 15. Drive the second hydraulic cylinder 18 to drive the second slide block 25 to slide along the second slide groove 12 to move the fixed shell horizontally. Move to fit the fixed upper port of the shell with the lower mold 6; drive the first hydraulic cylinder 11 to drive the upper mold 8 to descend, the descending upper mold 8 contacts the shell to apply extrusion force, and the edge of the shell is turned open through the lower mold 6 and the upper mold 8 to achieve shell flanging; the connecting block 23 is aligned with the connecting groove 22 and inserted, and the lower mold 6 and the upper mold 8 are pre-connected with the first mounting seat 5 and the second mounting seat 7 respectively, and the connecting bolt 24 limits the installed lower mold 6 and upper mold 8 to ensure the stability of the connected lower mold 6 and upper mold 8, which is convenient for replacing different types of molds for flanging processing.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A shell flanging die, comprising a processing table (1), characterized in that: A base (4) is arranged above the processing table (1), and the base (4) is fixedly connected to the processing table (1); a first mounting seat (5) is arranged above the base (4), and a lower mold (6) is arranged at the upper end of the first mounting seat (5); a mounting frame (3) is arranged above the outside of the base (4), and the mounting frame (3) is fixedly connected to the processing table (1); a second mounting seat (7) is arranged on the inner side of the mounting frame (3), and an upper mold (8) is arranged at the lower end of the second mounting seat (7); a first hydraulic cylinder (11) is arranged above the second mounting seat (7), and the first hydraulic cylinder (11) is fixedly connected to the mounting frame (3) and the second mounting seat (7); a second slide groove (12) is arranged at the upper end of the processing table (1) A second sliding block (25) is arranged inside the second sliding groove (12), and the second sliding block (25) is slidably connected to the processing table (1), a U-shaped seat (13) is arranged above the processing table (1), and the lower end of the U-shaped seat (13) is fixedly connected to the second sliding block (25), a fixed seat (15) is arranged above the U-shaped seat (13), a connecting seat (19) is arranged below the fixed seat (15), and the connecting seat (19) is fixedly connected to the fixed seat (15), connecting rods (26) are arranged on both sides of the connecting seat (19), two connecting rods (26) are arranged, and one end of the connecting rod (26) is fixedly connected to the connecting seat (19), and the other end of the connecting rod (26) is rotatably connected to the U-shaped seat (13).

2. The shell flanging die according to claim 1, characterized in that: A clamping plate (16) is arranged on the inner side of the fixing seat (15), and the clamping plate (16) is movably connected to the fixing seat (15). An electric push rod (17) is arranged on one side of the fixing seat (15), and the electric push rod (17) is connected to the fixing seat (15) by screws. The telescopic end of the electric push rod (17) is fixedly connected to the clamping plate (16).

3. The shell flanging die according to claim 2, characterized in that: A motor (14) is provided on one side of the U-shaped seat (13), and the motor (14) is connected to the U-shaped seat (13) via screws, and an output end of the motor (14) is connected to one end of a connecting rod (26).

4. The shell flanging die according to claim 2, characterized in that: A second hydraulic cylinder (18) is provided on one side of the processing table (1), and the second hydraulic cylinder (18) is connected to the processing table (1) via screws, the second hydraulic cylinder (18) is arranged inside the second slide groove (12), and the telescopic end of the second hydraulic cylinder (18) is fixedly connected to the second slide block (25), and the cross sections of the second slide groove (12) and the second slide block (25) are both T-shaped.

5. The shell flanging die according to claim 1, characterized in that: The upper end of the first mounting seat (5) and the lower end of the second mounting seat (7) are both provided with a connecting groove (22); the lower end of the lower mold (6) and the upper end of the upper mold (8) are both provided with a connecting block (23), and the connecting block (23) is integrated with the lower mold (6) and the upper mold (8); the connecting block (23) is arranged corresponding to the connecting groove (22), and the connecting block (23) is plugged into the first mounting seat (5) and the second mounting seat (7); one side of the first mounting seat (5) and the second mounting seat (7) is provided with a connecting bolt (24), and the connecting bolt (24) is threadedly connected to the first mounting seat (5) and the second mounting seat (7); the connecting bolt (24) and the connecting block (23) are arranged through.

6. The shell flanging die according to claim 1, characterized in that: A lifting chamber (20) is provided inside the base (4), the lower end of the first mounting seat (5) extends into the lifting chamber (20), and the first mounting seat (5) is slidably connected to the base (4), a third hydraulic cylinder (21) is provided inside the lifting chamber (20), and the third hydraulic cylinder (21) is fixedly connected to the base (4) and the first mounting seat (5), and support legs (2) are provided below the processing table (1), four support legs (2) are provided, and the support legs (2) are connected to the processing table (1) by screws.

7. The shell flanging die according to claim 1, characterized in that: A first slide groove (10) is arranged on the inner side wall of the mounting frame (3), two first slide grooves (10) are arranged, a first slider (9) is arranged inside the two first slide grooves (10), and the first slider (9) is slidably connected to the mounting frame (3), the two first sliders (9) are arranged on both sides of the second mounting seat (7), and the first slider (9) is fixedly connected to the second mounting seat (7).