A stainless steel mouth flange device

Abstract

This utility model provides a stainless steel flange device, including a support base and a side bracket. A servo motor is installed in the middle of the upper end of the support base. The shaft end of the servo motor is connected and fixed to the flange table through a flange and bolts. Multiple support rods are installed longitudinally on the lower edge of the flange table. Multiple lower mold seats and multiple signal transmitters are fixed on the upper edge of the flange table. A side bracket is welded to the lower left side of the support base. This design solves the problem that the original thin-walled stainless steel flange device is difficult to adapt to the material characteristics of stainless steel and is prone to defects due to "deformation concentration and stress loss" in a single punching of the convex ring. This utility model adopts a semi-automatic drive structure, which can facilitate the two-stage punching and flanged of stainless steel pipes of different sizes. The "conical pre-punching + flat final punching" achieves controllable stress, improved accuracy and reduced defects through step-by-step dispersion of deformation. It is especially suitable for high-precision and multi-specification stainless steel flange scenarios.

Description

Technical Field

[0001] This utility model is a stainless steel edge-flanging device, belonging to the field of stainless steel processing technology. Background Technology

[0002] Flanging the opening of stainless steel products (such as storage tanks, pipes, and containers) is an important forming process. Its functions are: ① to eliminate sharp edges (preventing cuts to operators); ② to enhance the structural strength of the opening (increasing resistance to deformation by more than 30%); and ③ to facilitate subsequent connections (such as fitting with flanges and sealing rings to achieve a seal). The quality of the flanging directly affects product safety (edge ​​roughness must be ≤Ra3.2μm) and assembly accuracy (flanging angle deviation must be ≤±1°).

[0003] Chinese patent CN216027342U proposes a thin-walled stainless steel flanging device. This device controls the operation of a hydraulic cylinder, whose output drives a movable plate and an upper die base downwards. An annular protrusion adheres tightly to the inner wall of the pipe and continues to press down. The upper die base contacts the top of the pipe and presses down on the pipe end during the pressing process, completing the flanging operation. Compared to traditional flanging devices, this thin-walled stainless steel flanging device requires manual adjustment of each die base, resulting in low efficiency. Furthermore, the device only uses an annular protrusion for single-pass stamping of the pipe, leading to poor flanging results. Because a single punching of the annular protrusion directly applies high pressure, stress concentration can easily occur at the stainless steel pipe opening, causing cracks or deformation at the flanged opening. Therefore, there is an urgent need for a stainless steel opening flanging device to solve these problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a stainless steel end-flanging device to solve the problems mentioned in the background. This invention adopts a semi-automatic drive structure, which can facilitate the two-stage stamping and flanging of stainless steel pipes of different sizes. The "conical pre-stamping + flat final stamping" achieves controllable stress, improved accuracy and reduced defects through step-by-step dispersion of deformation, making it particularly suitable for high-precision, multi-specification stainless steel end-flanging scenarios.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a stainless steel flange device, comprising a support base and a side bracket. A servo motor is installed in the middle of the upper end of the support base. The shaft end of the servo motor is connected and fixed to the flange table via a flange and bolts. Multiple support rods are longitudinally installed on the lower edge of the flange table. Multiple lower mold seats and multiple signal transmitters are fixed on the upper edge of the flange table. A side bracket is welded to the lower left side of the support base. A PLC control panel is longitudinally installed on the left side of the side bracket. A fixed motor is installed and fixed on the right end of the side bracket. A rotating disk is installed on the shaft end of the fixed motor. Multiple first hydraulic rods are longitudinally installed on the lower end of the rotating disk via a flange and bolts. A conical stamping block is installed on the movable end of each of the multiple first hydraulic rods. Multiple signal receivers are installed on the lower end of the rotating disk. A second hydraulic rod is longitudinally installed on the upper left side of the inside of the side bracket via bolts and a flange. A laser positioning pen is installed on the rear side of the second hydraulic rod. A cylindrical stamping block is installed on the movable end of the second hydraulic rod.

[0006] Furthermore, an annular groove is provided at the upper end of the support base, and bullseye wheels are installed at the lower ends of the plurality of support rods.

[0007] Furthermore, all of the aforementioned bullseye wheels are slidably located within the annular groove.

[0008] Furthermore, the multiple signal transmitters, fixed motors, multiple signal receivers, servo motors, multiple first hydraulic rods, second hydraulic rods, and laser positioning pens are all connected to the PLC control panel via wires.

[0009] Furthermore, Arabic numerals are written on the front surfaces of the plurality of lower die holders and the plurality of tapered stamping blocks.

[0010] Furthermore, metal reinforcing ribs are welded obliquely at the inner corners of the side supports.

[0011] The beneficial effects of this utility model are as follows: This utility model provides a stainless steel flange device. Because it incorporates a bullseye wheel, support rod, servo motor, flange table, lower die base, signal transmitter, side bracket, fixed motor, rotary disk, first hydraulic rod, conical stamping block, second hydraulic rod, laser positioning pen, cylindrical stamping block, and signal receiver, its structure is reasonable. It adopts a semi-automatic drive structure, enabling convenient double-stamping and flanged operation for stainless steel pipes of different sizes. The "conical pre-stamping + flat final stamping" process, through step-by-step dispersion deformation (achieving material pre-flow through conical stamping and then precisely controlling the final shape through flat stamping, with the core advantage being stress dispersion and controllable precision), achieves controllable stress, improved precision, and reduced defects. It is particularly suitable for high-precision, multi-specification stainless steel flange applications (such as pressure vessels and precision pipes), demonstrating strong practicality. Attached Figure Description

[0012] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0013] Figure 1 This is a schematic diagram of the structure of a stainless steel flange device according to the present invention;

[0014] Figure 2 This is a schematic diagram of the working structure of a single first hydraulic rod of a stainless steel flange device according to the present invention;

[0015] Figure 3 This is a schematic diagram of the working structure of the second hydraulic rod of a stainless steel flange device according to the present invention;

[0016] Figure 4 This is a schematic diagram of the disassembled rotating disk structure of a stainless steel flange device according to the present invention.

[0017] Figure 5 This is a schematic diagram of the disassembled structure of the flange platform of a stainless steel flange device according to this utility model.

[0018] In the diagram: 1-Support base, 2-Annular groove, 3-Bullseye wheel, 4-Support rod, 5-Servo motor, 6-Flanging table, 7-Lower mold base, 8-Signal transmitter, 9-Side bracket, 10-PLC control panel, 11-Fixed motor, 12-Rotating disk, 13-First hydraulic rod, 14-Conical stamping block, 15-Second hydraulic rod, 16-Laser positioning pen, 17-Cylindrical stamping block, 18-Signal receiver. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] Please see Figures 1-5This utility model provides a technical solution: a stainless steel flange device, including a support base 1 and a side bracket 9. A servo motor 5 is installed in the middle of the upper end of the support base 1. The shaft end of the servo motor 5 is connected and fixed to the flange table 6 by a flange and bolts. Multiple support rods 4 are installed longitudinally on the lower edge of the flange table 6. Multiple lower mold seats 7 and multiple signal transmitters 8 are fixed on the upper edge of the flange table 6. A side bracket 9 is welded to the lower left side of the support base 1. A PLC control panel 10 is installed longitudinally on the left side of the side bracket 9. A fixed motor 11 is installed and fixed on the right end of the side bracket 9. A rotating disk 1 is installed on the shaft end of the fixed motor 11. 2. Multiple first hydraulic rods 13 are longitudinally mounted on the lower end of the rotating disk 12 via flanges and bolts. Conical stamping blocks 14 are mounted on the movable ends of the multiple first hydraulic rods 13. Multiple signal receivers 18 are mounted on the lower end of the rotating disk 12. A second hydraulic rod 15 is longitudinally mounted on the upper left end of the side bracket 9 via bolts and flanges. A laser positioning pen 16 is mounted on the rear side of the second hydraulic rod 15. A cylindrical stamping block 17 is mounted on the movable end of the second hydraulic rod 15. This design solves the problem that the original thin-walled stainless steel flanging device is difficult to adapt to the material characteristics of stainless steel and is prone to defects due to "deformation concentration and stress loss" in single convex ring stamping.

[0021] As the first embodiment of this utility model: an annular groove 2 is provided at the upper end of the support base 1, and bullseye wheels 3 are installed at the lower ends of multiple support rods 4. The multiple bullseye wheels 3 are slidably located in the annular groove 2. The added bullseye wheels 3 can be adjusted by the support rods 4 to rotate in the annular groove 2, thereby ensuring the stability of the rotation of the flange table 6. Multiple signal transmitters 8, fixed motors 11, multiple signal receivers 18, servo motors 5, multiple first hydraulic rods 13, second hydraulic rods 15, and laser positioning pen 16 are all connected to the PLC control panel 10 through wires. The multiple signal transmitters 8, fixed motors 11, multiple signal receivers 18, servo motors 5, multiple first hydraulic rods 13, second hydraulic rods 15, laser positioning pen 16, and PLC control panel 10 are all existing and well-known mature devices, and their control principles will not be elaborated. The front surfaces of multiple lower die holders 7 and multiple tapered stamping blocks 14 are all marked with Arabic numerals. These Arabic numerals allow outsiders to easily identify which tapered stamping blocks 14 correspond to which lower die holders 7 of different sizes. Metal reinforcing ribs are welded obliquely to the inner corners of the side brackets 9. These metal reinforcing ribs improve the overall strength of the side brackets 9.

[0022] As a second embodiment of this utility model: First, the rotation angle of the fixed motor 11 and the servo motor 5 shaft ends is controlled by programming through the PLC control panel 10. The stainless steel pipe to be flanged is placed in a suitable lower mold base 7 (the upper flange of the stainless steel pipe is higher than the lower mold base 7). Then, the servo motor 5 shaft end is controlled to drive the flange table 6 to rotate (during this process, multiple bullseye wheels 3 can be adjusted by the support rod 4 to rotate in the annular groove 2, thereby ensuring the stability of the flange table 6 being driven to rotate), until the lower mold base 7 is at the far right. Then, the fixed motor 11 is started, so that the fixed motor 11 rotates to the right. The motor 11 drives the rotating disk 12 to rotate, thereby changing the positions of multiple first hydraulic rods 13 and multiple conical stamping blocks 14 until the appropriate conical stamping block 14 moves directly above the lower die base 7. At this time, multiple signal receivers 18 are respectively facing multiple signal transmitters 8. Then, the first hydraulic rod 13 at that location is controlled to move downward, and the conical stamping block 14 at that location will be driven to move downward smoothly, guiding the stainless steel pipe flange to flow slowly radially (the deformation is controlled at 60%-70% of the final flange amount), reducing the stress peak by 40% (from 300MPa in a single stamping to below 180MPa), avoiding local stress exceeding the material yield strength, and reducing the cracking rate of thick-walled parts to <3% (reference). Figure 2 Then, the movable end of the first hydraulic rod 13 is controlled to return to its initial position, and the servo motor 5 is started, causing the shaft end of the servo motor 5 to drive the flanging table 6 to rotate until the stainless steel tube that has undergone preliminary stamping is moved directly below the cylindrical stamping block 17, and after the laser positioning pen 16 has completed the precise positioning by irradiation, the second hydraulic rod 15 is started. The movable end of the second hydraulic rod 15 drives the cylindrical stamping block 17 to move down, forcing the stainless steel tube to transition from a conical shape to the target flanging angle (such as 90°) through the lower plane mold of the cylindrical stamping block 17 on the basis of pre-deformation. At this time, the material has completed the initial flow, the stress distribution of the secondary deformation is more uniform, and the wrinkle rate of the thin-walled part is reduced to <1% (reference). Figure 3 ).

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0024] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A stainless steel mouth flanging device comprising a support base (1) and side supports (9), characterised in that: A servo motor (5) is installed in the middle of the upper end of the support base (1). The shaft end of the servo motor (5) is connected and fixed to the flanging table (6) through flanges and bolts. Multiple support rods (4) are installed longitudinally on the lower edge of the flanging table (6). Multiple lower mold bases (7) and multiple signal transmitters (8) are fixed on the upper edge of the flanging table (6). A side bracket (9) is welded to the lower left side of the support base (1). A PLC control panel (10) is installed longitudinally on the left side of the side bracket (9). A fixed motor (11) is installed and fixed on the right side of the side bracket (9). (11) A rotating disk (12) is installed on the shaft end. Multiple first hydraulic rods (13) are longitudinally installed on the lower end of the rotating disk (12) through flanges and bolts. Conical stamping blocks (14) are installed on the movable ends of the multiple first hydraulic rods (13). Multiple signal receivers (18) are installed on the lower end of the rotating disk (12). A second hydraulic rod (15) is longitudinally installed on the upper left end of the side bracket (9) through bolts and flanges. A laser positioning pen (16) is installed on the rear side of the second hydraulic rod (15). A cylindrical stamping block (17) is installed on the movable end of the second hydraulic rod (15).

2. The stainless steel flange-flanging device according to claim 1, characterized in that: The upper end of the support base (1) is provided with an annular groove (2), and the lower ends of the multiple support rods (4) are all equipped with bullseye wheels (3).

3. The stainless steel flange-flanging device according to claim 2, characterized in that: The multiple bullseye wheels (3) are all slidably located within the annular groove (2).

4. The stainless steel flange-flanging device according to claim 1, characterized in that: Multiple signal transmitters (8), fixed motors (11), multiple signal receivers (18), servo motors (5), multiple first hydraulic rods (13), second hydraulic rods (15), and laser positioning pen (16) are all connected to the PLC control panel (10) via wires.

5. A stainless steel flange-flanging device according to claim 1, characterized in that: Arabic numerals are written on the front surfaces of the multiple lower die holders (7) and the multiple conical stamping blocks (14).

6. A stainless steel flange-flanging device according to claim 1, characterized in that: Metal reinforcing ribs are welded at the inner corners of the side brackets (9).

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