Cutting device for valve production

Abstract

The utility model relates to cutting technical field for valve production, concretely is a kind of cutting device for valve production, including chassis, cutting assembly and fixed component, the sliding slot on sliding plate is matched with slider, can adjust the interval of clamping assembly along horizontal direction, adapt to different steel pipe length, the clamping assembly of slider top is linked through arc block and the adhesion plate, realize the dynamic package to steel pipe outer diameter, when steel pipe outer diameter is larger, adhesion plate rotates outward around arc block, increase package radius, when steel pipe outer diameter is smaller, adhesion plate rotates inward, reduce package radius, through the flexible combination of "arc block+adhesion plate", tightly adhere to steel pipe outer diameter, avoid the problem that traditional fixed clamping groove is caused by size mismatching and is loose or cannot be loaded.

Description

Technical Field

[0001] This utility model relates to the field of cutting technology for valve production, specifically a cutting device for valve production. Background Technology

[0002] As is well known, valves are pipeline accessories used to open and close pipelines, control flow direction, and regulate and control the parameters (temperature, pressure, and flow rate) of the transported medium. According to their functions, they can be divided into shut-off valves, check valves, regulating valves, etc. Valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metals, and radioactive media.

[0003] Currently, most valve manufacturing cutting devices use common fixed-size chuck clamping devices, whose internal slots or jaw spacing is fixed and can only be used for steel pipes of a specific specification. When changing to steel pipes with different outer diameters, either the pipe diameter is too small, causing the steel pipe to loosen or slip during clamping, or the pipe diameter is too large, making it impossible to fit into the chuck. This necessitates stopping the machine to replace the entire clamping assembly, which greatly reduces production efficiency. Summary of the Invention

[0004] Technical problems to be solved In order to overcome the problem that an existing valve production cutting device cannot clamp steel pipe raw materials of different specifications, this utility model provides a valve production cutting device that can clamp pipes of different shapes and specifications.

[0005] Technical solution To achieve the above objectives, this utility model provides the following technical solution: a cutting device for valve production, comprising: Base frame; A cutting assembly, the cutting assembly being mounted on top of the base frame; and A fixing component is installed on the top of the base frame. The fixing component includes a sliding plate that is slidably disposed on the base frame. Two sliding grooves are formed on the sliding plate, and sliders are slidably disposed on both sides of the two sliding grooves. A clamping component is fixedly disposed on the top of the sliders, and arc-shaped blocks are fixedly disposed on both sides of the top of the clamping component. A first connecting frame is fixedly disposed on the top and bottom of the arc-shaped blocks, and a fitting plate is rotatably disposed on the first connecting frame.

[0006] Preferably, a second connecting frame is fixedly provided on the bonding plate, a first rotating rod is rotatably provided on the second connecting frame, and a moving rod is rotatably provided between the first rotating rods.

[0007] Furthermore, a mounting plate is fixedly provided on the side of the movable rod, and a rotating handle is rotatably provided on the arc-shaped plate. The rotating handle is connected to the mounting plate by a thread.

[0008] Furthermore, the clamping assembly includes a fixed base, which is fixedly disposed on the top of the slider. Second rotating rods are rotatably disposed on both sides of the fixed base, and a bent plate is rotatably disposed on the top of the second rotating rods. The bent plate is fixedly disposed with the arc plate.

[0009] In a further embodiment, a rotating plate is rotatably disposed between the bending plates, and a screw is rotatably disposed on the base frame. The screw is threadedly disposed with the rotating plate, and a circular plate handle is fixedly disposed on the screw.

[0010] Based on the aforementioned solution, the cutting assembly includes a fixing frame, which is fixedly mounted on the base frame. A first slide rail is fixedly mounted on the top of the fixing frame, a push plate is slidably mounted on the first slide rail, a second slide rail is fixedly mounted on the push plate, an adjusting plate is slidably mounted on the second slide rail, a mounting frame is fixedly mounted on the adjusting plate, a cutting blade is mounted on the bottom of the mounting frame, and a motor is fixedly mounted on the top of the mounting frame. The output shaft of the motor is connected to the top of the cutting blade via a key.

[0011] Furthermore, based on the aforementioned scheme, a bidirectional lead screw is rotatably arranged inside the slide groove, the slider and the bidirectional lead screw are connected by threads, one end of the bidirectional lead screw passes through the sliding plate, a circular handle is fixedly arranged on the side of the bidirectional lead screw at one end, and a pulley is fixedly arranged on the side of the bidirectional lead screw at the other end, and a transmission belt is provided between the pulley and the circular handle.

[0012] Furthermore, based on the aforementioned scheme, the inner sides of both the arc-shaped plate and the bonding plate are fixedly covered with rubber plates.

[0013] Beneficial effects This valve manufacturing cutting device features a sliding plate with a groove that engages with a slider. The spacing of the clamping components can be adjusted horizontally to accommodate different steel pipe lengths. The clamping components at the top of the slider dynamically wrap around the outer diameter of the steel pipe through the linkage of an arc-shaped block and a bonding plate. When the outer diameter of the steel pipe is large, the bonding plate rotates outward around the arc-shaped block to increase the wrapping radius. When the outer diameter of the steel pipe is small, the bonding plate rotates inward to reduce the wrapping radius. Through the flexible combination of the "arc-shaped block + bonding plate", the outer diameter of the steel pipe is tightly fitted, avoiding the loosening or inability to install problems caused by size mismatch in traditional fixed slots. Attached Figure Description

[0014] Figure 1 This is a side view of the structure of this utility model; Figure 2 This is a schematic diagram of the cutting assembly of this utility model; Figure 3This is a schematic diagram of the structure of the sliding plate of this utility model; Figure 4 This is a schematic diagram of the structure of the second rotating rod of this utility model; Figure 5 This is a schematic diagram of the clamping assembly of this utility model; Figure 6 This is a schematic diagram of the structure of the fixing component of this utility model.

[0015] In the diagram: 1. Base frame; 2. Cutting assembly; 3. Fixing assembly; 4. Sliding plate; 5. Slide groove; 6. Slider; 7. Clamping assembly; 8. Arc block; 9. First connecting frame; 10. Adhesive plate; 11. Second connecting frame; 12. First rotating rod; 13. Moving rod; 14. Mounting plate; 15. Rotating handle; 16. Fixed seat; 17. Second rotating rod; 18. Bent plate; 19. Rotating plate; 20. Screw; 21. Round plate handle; 22. Fixing frame; 23. First slide rail; 24. Push plate; 25. Second slide rail; 26. Adjusting plate; 27. Mounting frame; 28. Cutting blade; 29. ​​Motor; 30. Bidirectional lead screw; 32. Round handle; 33. Pulley; 34. Transmission belt; 35. Rubber plate. Detailed Implementation

[0016] 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.

[0017] See Figures 1-6 A cutting device for valve production includes a base frame 1; a cutting assembly 2; and a fixing assembly 3.

[0018] The base frame 1 is welded from Q235 steel plate (with powder coating). A linear guide rail (such as HGH20CA type) is installed on the top. The sliding plate 4 is slidably connected to the base frame 1 through the guide rail slider 6, and can move along the length of the base frame 1 to accommodate valve workpieces of different lengths. Two parallel T-shaped grooves 5 are opened on the sliding plate 4, and two sliders 6 are set on each side of the groove 5 (a total of 4 sliders 6). The bottom of the slider 6 is machined with T-shaped protrusions (matching the grooves 5), and the surface is hardened to ensure wear resistance and no jamming during sliding. The gap between the slider 6 and the groove 5 is controlled at 0.1-0.2mm. The gap can be eliminated by adjusting the set screws on the side of the slider 6 to prevent the slider 6 from shaking during clamping.

[0019] The arc-shaped block 8 is milled from aluminum alloy (6061-T6), and its curvature matches the outer circle of commonly used valves. A nitrile rubber sheet 35 is pasted on the surface to prevent scratching the valve surface during clamping.

[0020] The arc-shaped block 8 is fixed to the top of the clamping assembly 7 with bolts to ensure uniform force distribution. The first connecting frame 9 is an L-shaped steel plate, which is rotatably connected to the top and bottom of the arc-shaped block 8 via pins. The bonding plate 10 is made of elastic steel plate (polished surface) and is fixed to the first connecting frame 9 with bolts. When there are local protrusions or elliptic deviations on the valve surface, the bonding plate 10 can rotate around the pin shaft to automatically adjust the angle and fit with the valve surface, disperse the clamping force, and avoid deformation caused by single-point force.

[0021] First, refer to Figure 6 In this embodiment, the second connecting frame 11 is made of stainless steel plate by stamping and welding to the back of the bonding plate 10. The frame body has a circular through hole for installing the first rotating rod 12. The first rotating rod 12 is a stainless steel round rod, and its two ends are rotatably connected to the second connecting frame 11 by pins. The middle of the two first rotating rods 12 is connected by a moving rod 13 (rectangular cross section). The moving rod 13 is perpendicular to the first rotating rod 12, forming a parallelogram linkage mechanism.

[0022] The moving rod 13 is welded to the side of the mounting plate 14 (L-shaped). The mounting plate 14 has threaded holes. The rotating handle 15 is a T-shaped structure (knurled on the handle surface). The bottom is machined with external threads (matching the threaded holes of the mounting plate 14). The top is rotatably connected to the threaded seat (embedded installation) on the side of the arc-shaped block 8. When the rotating handle 15 is rotated, the threaded pair drives the mounting plate 14 to move axially along the rotating handle 15, which drives the moving rod 13 to translate. The moving rod 13 pushes the second connecting frame 11 through the first rotating rod 12, so that the bonding plate 10 rotates around the pin (the rotation angle is proportional to the displacement of the moving rod 13). This design can compensate for the local unevenness of the valve surface and ensure the contact area between the bonding plate 10 and the valve body.

[0023] Then, refer to Figure 5 In this embodiment, the fixed seat 16 is forged from No. 45 steel (surface hardened), and the bottom is fixed to the slider 6 by bolts. U-shaped grooves are opened on both sides of the top for installing the second rotating rod 17. The second rotating rod 17 is a stainless steel round rod, and both ends are rotatably connected to the fixed seat 16 and the bent plate 18 by joint bearings (such as GE10ES). The bent plate 18 has a "Z" shaped structure, and the bottom is connected to the second rotating rod 17. The top is welded with a fixed arc block 8 (matching the outer arc of the valve).

[0024] The rotating plate 19 is a rectangular steel plate, with both ends rotatably connected to the middle of the two side bending plates 18 via pins. A threaded hole is opened in the middle of the plate. The screw 20 adopts a trapezoidal thread and is rotatably connected to the base frame 1 at the bottom via a thrust ball bearing (type 51105). A round plate handle 21 (with anti-slip grooves on the edge) is welded to the top. Rotating the round plate handle 21 clockwise moves the screw 20 upward, pushing the rotating plate 19 to lift. The rotating plate 19 pulls the two side bending plates 18 to swing inward via pins. The bending plates 18 drive the second rotating rod 17 to rotate around the fixed seat 16, eventually causing the arc-shaped block 8 to move synchronously towards the center of the valve until it is clamped (the clamping force is maintained by the self-locking of the screw 20). Rotating in the opposite direction releases the clamp.

[0025] Secondly, see Figure 2 In this embodiment, the fixing frame 22 is welded from rectangular steel pipes, and its bottom is fixed to the base frame 1 by anchor bolts. The top is equipped with a first slide rail 23 (such as a THKSR20 linear guide rail). The length of the guide rail is determined according to the cutting stroke, and the accuracy class is H. The push plate 24 is machined from cast iron (HT200), and the bottom is equipped with a guide rail slider 6 (matching the first slide rail 23). The top is welded with a second slide rail 25. A handwheel is provided on the side of the push plate 24, and the lateral movement is achieved through the transmission of the screw 20. The adjusting plate 26 is milled from aluminum alloy (6061-T6). The bottom slider 6 is connected to the second slide rail 25 (such as the HIWINEG15 type). The top is fixed with a mounting bracket 27 by bolts. The adjusting plate 26 is equipped with a fine-tuning knob, which achieves fine longitudinal adjustment through a gear and rack mechanism. The mounting bracket 27 has an inverted T-shaped structure. The bottom is equipped with a cutting blade 28 (such as a high-speed steel circular saw blade), and the top is fixed with a motor 29. The output shaft of the motor 29 is connected to the cutting blade 28 by a flat key. It is equipped with a safety cover (transparent acrylic material, protection level IP54). See again Figure 3 In this embodiment, the bidirectional lead screw 30 adopts a Tr30×6 trapezoidal thread, with positive and negative threads machined at both ends. It is installed in the bearing seats on both sides of the sliding plate 4 via deep groove ball bearings (type 6206). One end of the bidirectional lead screw 30 extends out of the sliding plate 4 and is equipped with a circular handle 32 (knurled surface). The other end is equipped with a pulley 33. The sliders 6 on both sides are respectively engaged with the positive and negative threads of the bidirectional lead screw 30. When the bidirectional lead screw 30 is rotated, the sliders 6 move synchronously inward or outward. The transmission belt 34 is a rubber synchronous belt (model T5-400) that connects the pulleys 33 of the bidirectional lead screws 30 on both sides (the center distance is adjusted according to the length of the sliding plate 4) to ensure that the bidirectional lead screw 30 rotates synchronously. This design avoids valve skewing caused by uneven clamping force on both sides during manual operation. Finally, see Figure 6In this embodiment, the inner sides of the arc-shaped block 8 and the bonding plate 10 are both fixedly covered with rubber plates 35. The rubber plates 35 are made of nitrile rubber (NBR), with a Shore hardness of 70±5, tensile strength ≥15MPa, and surface roughness Ra≤6.3μm. This provides sufficient friction while avoiding scratching the valve surface (such as the mirror polished surface of stainless steel). The rubber plate 35 is fixed to the inner side of the arc block 8 and the bonding plate 10 by countersunk bolts. The edges of the rubber plate 35 are rounded to prevent it from lifting. The bonding plate 10 and the rubber plate 35 have longitudinal and transverse anti-slip grooves. When the angle of the bonding plate 10 is adjusted, the anti-slip grooves can be embedded into the tiny pits on the valve surface to further improve the clamping stability.

[0026] Working principle: When using this valve production cutting device, first, according to the length of the valve workpiece, manually push the sliding plate 4 to move along the linear guide rail of the base frame 1 and adjust it to a suitable position.

[0027] Rotating the circular handle 32 drives the sliders 6 on both sides to move synchronously inward or outward along the slide groove 5 via the bidirectional lead screw 30, adapting to the clamping requirements of workpieces of different lengths.

[0028] Place the valve workpiece between the arc-shaped blocks 8, rotate the rotating handle 15, and through the threaded transmission, the moving rod 13 pushes the first rotating rod 12, causing the bonding plate 10 to rotate around the first connecting frame 9. The bonding plate 10 automatically adjusts the angle according to the outer diameter of the workpiece, tightly wrapping the surface of the workpiece. At the same time, rotate the circular plate handle 21, and the screw 20 pushes the rotating plate 19 to rise. Through the linkage of the bending plate 18 and the second rotating rod 17, the arc-shaped blocks 8 on both sides move synchronously towards the center until the rubber plate 35 is tightly attached to the workpiece. The self-locking characteristic of the trapezoidal thread is used to maintain the clamping force.

[0029] Push the push plate 24 along the first slide rail 23 to move it. Adjust the cutting assembly 2 to be directly above the workpiece to be cut (horizontal positioning). Adjust the adjusting plate 26 along the second slide rail 25 to fine-tune the longitudinal position of the cutting blade 28 to ensure cutting accuracy (such as cutting depth). Turn on the motor 29 and the cutting blade 28 will rotate at high speed (the speed is set according to the workpiece material). Slowly push the push plate 24 to make the cutting blade 28 cut into the workpiece and complete the cutting operation.

[0030] The circular plate handle 21 and the rotating handle 15 are rotated in the opposite direction. The screw 20 descends and drives the bent plate 18 to loosen the arc block 8. The bonding plate 10 is reset under the action of the first rotating rod 12, releasing the clamping of the workpiece.

[0031] 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 cutting device for valve manufacturing, characterized in that, include: Base frame (1); A cutting assembly (2) is mounted on top of the base frame (1); as well as A fixing component (3) is installed on the top of the base frame (1). The fixing component (3) includes a sliding plate (4). The sliding plate (4) is slidably disposed on the base frame (1). Two sliding grooves (5) are opened on the sliding plate (4). Slider (6) is slidably disposed on both sides of the two sliding grooves (5). A clamping component (7) is fixedly disposed on the top of the slider (6). Arc blocks (8) are fixedly disposed on both sides of the top of the clamping component (7). A first connecting frame (9) is fixedly disposed on the top and bottom of the arc block (8). A bonding plate (10) is rotatably disposed on the first connecting frame (9).

2. The valve manufacturing cutting device according to claim 1, characterized in that, A second connecting frame (11) is fixedly provided on the bonding plate (10), a first rotating rod (12) is rotatably provided on the second connecting frame (11), and a moving rod (13) is rotatably provided between the first rotating rods (12).

3. The valve manufacturing cutting device according to claim 2, characterized in that, A mounting plate (14) is fixedly provided on the side of the moving rod (13), and a rotating handle (15) is rotatably provided on the arc block (8). The rotating handle (15) and the mounting plate (14) are connected by threads.

4. The valve manufacturing cutting device according to claim 1, characterized in that, The clamping assembly (7) includes a fixed seat (16), which is fixedly disposed on the top of the slider (6). A second rotating rod (17) is rotatably disposed on both sides of the fixed seat (16), and a bent plate (18) is rotatably disposed on the top of the second rotating rod (17). The bent plate (18) is fixedly disposed with the arc block (8).

5. The valve manufacturing cutting device according to claim 4, characterized in that, A rotating plate (19) is rotatably arranged between the bending plates (18), and a screw (20) is rotatably arranged on the base frame (1). The screw (20) and the rotating plate (19) are connected by threads, and a round plate handle (21) is fixedly arranged on the screw (20).

6. The valve manufacturing cutting device according to claim 1, characterized in that, The cutting assembly (2) includes a fixing frame (22), which is fixedly mounted on the base frame (1). A first slide rail (23) is fixedly mounted between the top of the fixing frame (22). A push plate (24) is slidably mounted on the first slide rail (23). A second slide rail (25) is fixedly mounted on the push plate (24). An adjusting plate (26) is slidably mounted on the second slide rail (25). A mounting frame (27) is fixedly mounted on the adjusting plate (26). A cutting blade (28) is mounted on the bottom of the mounting frame (27). A motor (29) is fixedly mounted on the top of the mounting frame (27). The output shaft of the motor (29) is connected to the top of the cutting blade (28) by a key.

7. The valve manufacturing cutting device according to claim 1, characterized in that, A bidirectional lead screw (30) is rotatably installed in the slide groove (5). The slider (6) and the bidirectional lead screw (30) are connected by a thread. One end of the bidirectional lead screw (30) passes through the sliding plate (4). A circular handle (32) is fixedly installed on the side of the bidirectional lead screw (30) at one end. A pulley (33) is fixedly installed on the side of the bidirectional lead screw (30) at the other end. A transmission belt (34) is provided between the pulley (33) and the circular handle (32).

8. The valve manufacturing cutting device according to claim 1, characterized in that, The inner sides of both the arc-shaped block (8) and the bonding plate (10) are fixedly covered with rubber plates (35).

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