Fixing device for flange machining

Abstract

The utility model discloses a fixing device for flange processing, and relates to the technical field of clamps, the fixing device comprises a workbench, a cylinder, a sleeve, a cylinder, a plurality of pressing plates and a plurality of groups of clamping lock structures, the center position of the workbench is provided with a limiting hole, the sleeve vertically penetrates through the limiting hole, a fixing plate is arranged at the lower part in a sleeve cavity of the sleeve, and the clamping lock structures are arranged on the cylinder cavity of the sleeve. A mounting base is arranged at the bottom of the workbench, the air cylinder is arranged on the mounting base, the telescopic end of the air cylinder is fixedly connected with the fixing plate, and the outer diameter of the cylinder body is matched with the inner diameter of a sleeve cavity of the sleeve; the single air cylinder serves as a power source, the air cylinder pulls the sleeve and the cylinder connected with the sleeve to move downwards, so that the multiple pressing plates are driven to press the flange on the workbench, axial stability of the flange is guaranteed, meanwhile, the contact area between the flange and the workbench and the pressing plates is increased, radial friction force is increased, fixing is stable, and the structure is simple.

Description

Technical Field

[0001] This utility model relates to the field of clamping technology, specifically a fixing device for flange processing. Background Technology

[0002] A flange is a tool commonly used for connecting pipe ends. The production and processing of flanges involves multiple steps, such as drilling or finishing the holes, and chamfering the flange edges. Generally, flange processing requires fixing the flange; currently, this is typically achieved using a pair of cylinders to drive clamping plates that clamp the flange's side surfaces.

[0003] However, the existing method has some drawbacks. It clamps the flange side surface with differential pressure, and the axial stability of the flange relies on the friction force generated by the pressure. The contact area between the clamping plate and the flange is limited. After long-term operation, once the clamping pressure becomes unstable and decreases, the friction force decreases, and the flange is prone to axial movement, affecting the processing quality. At the same time, the flange side surface is generally smooth, and to generate a large friction force, a large pressure is required, which places high demands on the thrust of the cylinder extension ends on both sides. In addition, the two sets of cylinders cause the parts on the worktable to be messy, which is inconvenient for repair and maintenance. Utility Model Content

[0004] To address the aforementioned shortcomings of existing technologies, this utility model provides a fixing device for flange processing. A single cylinder serves as the power source, pulling the sleeve and the column connected to the sleeve downwards, thereby driving multiple pressure plates to press the flange onto the worktable, ensuring the axial stability of the flange. At the same time, it increases the contact area with the worktable and pressure plates, increasing the radial friction force, resulting in stable fixing and a simple structure.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fixing device for flange processing, comprising a worktable, a cylinder, a sleeve, a column, multiple pressure plates, and multiple sets of locking structures. A limiting hole is formed at the center of the worktable, and the sleeve vertically penetrates the limiting hole. A fixing plate is provided at the lower part of the sleeve's cavity. A mounting base is provided at the bottom of the worktable. The cylinder is mounted on the mounting base, and its telescopic end is fixedly connected to the fixing plate. The outer diameter of the column matches the inner diameter of the sleeve's cavity. The column can be detachably connected to the upper part of the sleeve's cavity via multiple sets of locking structures. Multiple pressure plates are arranged in a ring matrix on the upper part of the column's sidewall and are parallel to the worktable. The flange has a central hole, the outer diameter of the sleeve is smaller than the inner diameter of the central hole, and the distance from the column's axis to one end of the pressure plate is greater than the radius of the central hole.

[0006] Preferably, the locking structure includes a sliding groove, an inclined plate, a spring, and a locking post. The locking post is disposed on the lower part of the side surface of the column. The locking post can be inserted into the sliding groove and locked in place. The sliding groove is formed on the side wall of the sleeve cavity and includes a vertical groove, a horizontal groove, a locking groove, and a mounting groove. The vertical groove is formed vertically downward along the upper edge of the side wall of the cavity. One end of the horizontal groove is connected to the lower end of the vertical groove and is formed circumferentially along the side wall of the cavity. One end of the locking groove is connected to the other end of the horizontal groove and is formed vertically upward along the side wall of the cavity. The mounting groove is formed vertically downward along the lower end of the locking groove. The spring is disposed in the mounting groove. The inclined plate is connected to the upper end of the spring, and its inclined surface faces the direction of the horizontal groove.

[0007] Preferably, the upper end of the vertical groove is provided with a flared opening.

[0008] Preferably, the bottom of the pressure plate is provided with an anti-slip pad.

[0009] This utility model provides a fixing device for flange processing, which has the following advantages:

[0010] 1. In this utility model, a single cylinder serves as the power source, saving energy and facilitating repair and maintenance. The cylinder pulls the sleeve and the column connected to the sleeve downward, thereby driving multiple pressure plates to press the flange onto the worktable, ensuring the axial stability of the flange. At the same time, it increases the contact area with the worktable and pressure plates, increases the radial friction, and provides stable fixation with a simple structure.

[0011] 2. In this utility model, the locking structure moves the locking pin downward in the vertical groove, rotates in the horizontal groove, and moves upward in the locking groove. Finally, the locking pin is locked into the locking groove by the inclined plate, which ensures the stability between the pin and the sleeve, thereby ensuring the stability of the pressure plate during operation. It is easy to install and disassemble. Attached Figure Description

[0012] Figure 1 This is a front sectional view of a fixing device for flange processing according to the present invention;

[0013] Figure 2 This is a schematic diagram of the column and pressure plate in this utility model;

[0014] Figure 3 This is a cross-sectional schematic diagram of the sleeve of this utility model;

[0015] Figure 4 This is a schematic diagram illustrating the working process of inserting the card post according to this utility model;

[0016] Figure 5 This is a schematic diagram of the pressure plate and flange of this utility model.

[0017] In the diagram: 1. Workbench; 2. Mounting base; 3. Sleeve; 4. Cylinder; 5. Fixing plate; 6. Limiting hole; 7. Anti-slip pad; 8. Pressure plate; 9. Cylinder cavity; 10. Column; 11. Central hole; 12. Flange; 13. Locking post; 14. Spring; 15. Mounting groove; 16. Vertical groove; 17. Horizontal groove; 18. Locking groove; 19. Inclined plate; 20. Flange. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figure 1-5 As shown, a fixing device for processing flange 12 includes a worktable 1, a cylinder 4, a sleeve 3, a column 10, multiple pressure plates 8, and multiple sets of locking structures. A limiting hole 6 is formed at the center of the worktable 1. The sleeve 3 vertically penetrates the limiting hole 6. A fixing plate 5 is provided at the lower part of the sleeve 3's cavity 9. A mounting base 2 is provided at the bottom of the worktable 1. The cylinder 4 is mounted on the mounting base 2, and its telescopic end is fixedly connected to the fixing plate 5. The outer diameter of the column 10 matches the inner diameter of the sleeve 3's cavity 9. The column 10 can be detachably connected to the upper part of the sleeve 3's cavity 9 via multiple sets of locking structures. Multiple pressure plates 8 are arranged in a ring matrix on the upper part of the column 10's sidewall and are parallel to the worktable 1. The flange 12 has a central hole 11. The outer diameter of the sleeve 3 is smaller than the inner diameter of the central hole 11. The distance from the axis of the column 10 to one outer end of the pressure plate 8 is greater than the radius of the central hole 11. The locking structure includes a slide groove, an inclined plate 19, a spring 14, and a locking post 13. The locking post 13 is located on the lower part of the side surface of the column 10. The locking post 13 can be inserted into the slide groove and locked in place. The slide groove is formed on the side wall of the sleeve 3 cavity 9. The slide groove includes a vertical groove 16, a horizontal groove 17, a locking groove 18, and a mounting groove 15. The vertical groove 16 is formed vertically downward along the upper edge of the side wall of the cavity 9. One end of the horizontal groove 17 is connected to the lower end of the vertical groove 16 and... The locking groove 18 is opened circumferentially along the side wall of the cylindrical cavity 9. One end of the locking groove 18 is connected to the other end of the horizontal groove 17 and is opened vertically upward along the side wall of the cylindrical cavity 9. The mounting groove 15 is opened vertically downward along the lower end of the locking groove 18. The spring 14 is set in the mounting groove 15. The inclined plate 19 is connected to the upper end of the spring 14, and its inclined surface faces the direction of the horizontal groove 17. The upper end of the vertical groove 16 is provided with a flared opening 20. The bottom of the pressure plate 8 is provided with an anti-slip pad 7.

[0020] Its detailed connection methods are well-known technologies in this field. The following mainly introduces the working principle and process, as follows:

[0021] According to the instruction manual Figure 1-5 As can be seen, when this utility model is in operation, the telescopic end of the cylinder 4 on the mounting base 2 at the bottom of the workbench 1 is extended, causing the fixed plate 5 and the sleeve 3 connected to it to move upward, making them higher than the workbench 1, which facilitates the subsequent installation of the pressure plate 8. Since the sleeve 3 is vertically slidably connected to the limiting hole 6 in the center of the workbench 1, the stability of the vertical movement of the sleeve 3 can be ensured. Because the flange 12 has a central hole 11, and the inner diameter of the central hole 11 is larger than the outer diameter of the sleeve 3, the flange 12 can be placed on the workbench 1 by fitting it over the sleeve 3. Multiple pressure plates 8 are arranged in a ring matrix on the upper part of the column 10. The operator inserts the column 10 into the upper part of the cavity 9 of the matching sleeve 3, and the connection is detachable through multiple sets of locking structures. During operation, this is a temporary locking mechanism to ensure that the main body and pressure plates 8 cannot move axially, radially, or otherwise. Since the distance from the axis of the column 10 to one end of the outer side of the pressure plate 8 is greater than the radius of the central hole 11, the retraction end of the cylinder 4 retracts, causing the sleeve 3, column 10, and pressure plates 8 to press against the upper surface of the flange 12, completing the pressing and fixing. During this pressing process, the pressure plates 8 are kept away from the machined holes on the flange 12 as much as possible, a point easily understood by those skilled in the art. In this utility model, a single cylinder 4 serves as the power source, saving energy and facilitating maintenance. The cylinder 4 pulls the sleeve 3 and the column 10 connected to the sleeve 3 downward, thereby driving multiple pressure plates 8 to press the flange 12 onto the worktable 1, ensuring the axial stability of the flange 12. At the same time, it increases the contact area with the worktable 1 and the pressure plates 8, increases the radial friction, and provides stable fixation. The structure is simple and easy to maintain.

[0022] The locking structure includes a sliding groove, an inclined plate 19, a spring 14, and a locking post 13. The locking post 13 is located on the lower part of the side surface of the column 10. The locking post 13 can be inserted into the sliding groove and locked. The sliding groove is opened on the side wall of the sleeve 3 cavity 9. The sliding groove includes a vertical groove 16, a horizontal groove 17, a locking groove 18, and an installation groove 15. The vertical groove 16 is opened vertically downward along the upper edge of the side wall of the cavity 9. One end of the horizontal groove 17 is connected to the lower end of the vertical groove 16 and is opened circumferentially along the side wall of the cavity 9. One end of the locking groove 18 is connected to the other end of the horizontal groove 17 and is opened vertically upward along the side wall of the cavity 9. The installation groove 15 is opened vertically downward along the lower end of the locking groove 18. The spring 14 is located in the installation groove 15. The inclined plate 19 is connected to the upper end of the spring 14, and its inclined surface faces the direction of the horizontal groove 17.

[0023] During operation, insert the column 10 into the cavity 9 of the sleeve 3 and align the locking pin 13 with the vertical groove 16. Move it downwards to the bottom of the vertical groove 16. At this time, rotate the column 10 and the locking pin 13 so that the locking pin 13 slides in the horizontal groove 17 until it reaches the end of the horizontal groove 17. At this time, it collides with the inclined surface of the inclined plate 19. The inclined surface of the inclined plate 19 contacts the locking pin 13. Since the bottom of the inclined plate 19 is connected by the spring 14, the locking pin 13 can press the inclined plate 19 into the mounting groove 15. The spring 14 is compressed. Then, move the column 10 and the locking pin 13 upwards into the locking groove 18. The spring 14 returns to its original position, so that the inclined plate 19 moves upwards and blocks the locking pin 13 in the locking groove 18. Without any downward external force, the locking pin 13 stays in the locking groove 18 and remains stable. During disassembly, personnel press down on the column 10 to make the locking column 13 press against the inclined plate 19, and then remove the column 10 in the reverse direction used during installation. Installation and disassembly are convenient, quick, and the installation is stable. Here, a flared opening 20 can be provided at the upper end of the vertical groove 16 to facilitate the insertion of the locking column 13.

[0024] Among them, the bottom of the pressure plate 8 is provided with an anti-slip pad 7 to increase the friction between it and the upper surface of the flange 12.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixing device for flange (12) machining, characterized in that, The system includes a workbench (1), a cylinder (4), a sleeve (3), a column (10), multiple pressure plates (8), and multiple sets of locking structures. A limiting hole (6) is provided at the center of the workbench (1). The sleeve (3) extends vertically through the limiting hole (6). A fixing plate (5) is provided at the lower part of the sleeve (3)'s cavity (9). A mounting base (2) is provided at the bottom of the workbench (1). The cylinder (4) is mounted on the mounting base (2), and the telescopic end of the cylinder (4) is fixedly connected to the fixing plate (5). The outer diameter of the column (10) matches the inner diameter of the cavity (9) of the sleeve (3). The column (10) can be detachably connected to the upper part of the cavity (9) of the sleeve (3) through multiple sets of locking structures. Multiple pressure plates (8) are arranged in annular matrix on the upper part of the side wall of the column (10) and are parallel to the workbench (1). The flange (12) has a central hole (11). The outer diameter of the sleeve (3) is smaller than the inner diameter of the central hole (11). The distance from the axis of the column (10) to the outer end of the pressure plate (8) is greater than the radius of the central hole (11).

2. The fixing device for flange (12) processing according to claim 1, characterized in that, The locking structure includes a sliding groove, an inclined plate (19), a spring (14), and a locking post (13). The locking post (13) is located on the lower part of the side surface of the column (10). The locking post (13) can be inserted into the sliding groove and locked in place. The sliding groove is opened on the side wall of the sleeve cavity (9). The sliding groove includes a vertical groove (16), a horizontal groove (17), a locking groove (18), and a mounting groove (15). The vertical groove (16) is opened vertically downward along the side wall of the cavity (9). One end of the horizontal groove (17) is connected to the lower end of the vertical groove (16) and is opened circumferentially along the side wall of the cylinder cavity (9). One end of the locking groove (18) is connected to the other end of the horizontal groove (17) and is opened vertically upward along the side wall of the cylinder cavity (9). The mounting groove (15) is opened vertically downward along the lower end of the locking groove (18). The spring (14) is set in the mounting groove (15). The inclined plate (19) is connected to the upper end of the spring (14), and its inclined surface faces the direction of the horizontal groove (17).

3. A fixing device for flange (12) processing according to claim 2, characterized in that, The upper end of the vertical groove (16) is provided with a flared opening (20).

4. A fixing device for flange (12) processing according to claim 1, characterized in that, The bottom of the pressure plate (8) is provided with an anti-slip pad (7).

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