A cylindrical metal workpiece plasma cutting device

Abstract

This invention provides a plasma cutting device for cylindrical metal workpieces, including a frame, a rotating disk rotatable in a vertical direction, and a drive assembly connected to the rotating disk. Multiple detachable stops are spaced circumferentially on the rotating disk. The frame also has a vertically movable slider with a rotatable lead screw axially aligned with the vertical direction. The frame has a threaded hole that mates with the lead screw. The slider has a movable seat that moves radially along the rotating disk. The movable seat has a limiting rod axially parallel to the radial direction of the rotating disk, and the slider has a limiting sleeve that mates with the limiting rod. The movable seat has a nozzle with its output end facing the center of the rotating disk. This invention solves the technical problem of inconvenience in using existing cutting equipment, resulting in convenient positioning of the workpiece to be cut and simple operation.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a plasma cutting device for cylindrical metal workpieces. Background Technology

[0002] Cylindrical metal workpieces are usually formed by sheet metal forming or processed by profiles. Generally, after the workpiece is formed, the length of its cylindrical structure will differ from the actual usage requirements, so the workpiece needs to be cut to remove the excess material.

[0003] When cutting cylindrical metal workpieces using existing cutting equipment, the workpiece needs to be placed horizontally, and tooling such as a three-jaw chuck is used to clamp both ends of the workpiece so that it can rotate during the cutting process. However, clamping the workpiece horizontally onto the tooling requires first hoisting the workpiece onto the tooling, and then operating the tooling to hold the ends of the workpiece. The operation steps are cumbersome, time-consuming, and labor-intensive. Furthermore, clamping the ends of the workpiece with the tooling can easily cause deformation of the workpiece, affecting the quality of the workpiece. Therefore, existing cutting equipment is inconvenient to use. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a plasma cutting device for cylindrical metal workpieces, which solves the problem of inconvenient use of existing cutting equipment.

[0005] According to an embodiment of this utility model, a plasma cutting device for cylindrical metal workpieces includes a frame, on which a rotating disk rotatable in a vertical direction and a drive assembly connected to the rotating disk are provided. Multiple detachable stops are spaced circumferentially on the rotating disk. A slider rotatable in a vertical direction is also provided on the frame. A rotatable lead screw is provided on the slider, with its axial direction aligned with the vertical direction. A threaded hole cooperating with the lead screw is provided on the frame. A movable seat is provided on the slider, movable in the radial direction of the rotating disk. A limiting rod is provided on the movable seat, with its axial direction parallel to the radial direction of the rotating disk. A limiting sleeve cooperating with the limiting rod is provided on the slider. A nozzle is provided on the movable seat, with the nozzle's output end facing the center of the rotating disk.

[0006] Furthermore, the rotating disk is provided with a mounting shaft, the center of the rotating disk is located on the axis of the mounting shaft, and the frame is provided with a mounting seat that cooperates with the mounting shaft.

[0007] Furthermore, the drive assembly includes a drive motor and a first gear disposed at the output end of the drive motor, and a second gear that cooperates with the first gear is provided on the mounting shaft.

[0008] Furthermore, the rotating disk is provided with a plurality of positioning screw holes at radial intervals along the rotating disk, and the stop block is provided with an elongated hole, in which a positioning bolt is provided. The elongated hole communicates with one of the positioning screw holes, and the positioning bolt engages with the corresponding positioning screw hole.

[0009] Furthermore, the side of the stop block near the center of the rotating disk is covered with a flexible pad, and the surface of the flexible pad has anti-slip texture.

[0010] Furthermore, the frame is also provided with a guide rail, the length direction of which is consistent with the vertical direction, and the slider cooperates with the guide rail.

[0011] Furthermore, the lead screw is equipped with a handwheel, which is fixedly connected to the end of the lead screw away from the slider.

[0012] Furthermore, the movable seat is provided with two guide wheels that can rotate in the vertical direction, and the two guide wheels are respectively located on opposite sides of the nozzle.

[0013] Furthermore, the limiting sleeve is provided with a locking screw hole and a locking screw that cooperates with the locking screw hole, and one end of the locking screw abuts against the limiting rod.

[0014] Furthermore, the frame is also equipped with a protective cover, which is located on the side of the rotating disk away from the nozzle.

[0015] Compared with existing technologies, this utility model has the following advantages: By using a rotating disk rotatably mounted on the frame for vertically placing the cylindrical metal workpiece to be cut, the workpiece is positioned by a stop block that fits against the side wall of the workpiece after it is placed on the rotating disk. When the rotating disk rotates under the drive component, the workpiece can rotate synchronously with the rotation of the rotating disk. The height of the slider can be adjusted by rotating the lead screw to change the height of the nozzle, thereby adjusting the length of the excess material cut from the workpiece. At the same time, the distance between the nozzle and the workpiece can be changed by sliding the limiting rod in the limiting sleeve. During the cutting process, the plasma ejected from the nozzle acts stably on the workpiece and cuts it. This solves the technical problem of the inconvenience of using existing cutting equipment, and produces the technical effects of convenient positioning of the workpiece to be cut and simple operation, which is conducive to improving the processing efficiency of cylindrical metal workpieces. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a plasma cutting device for cylindrical metal workpieces according to an embodiment of the present invention; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the structure of a plasma cutting device for cylindrical metal workpieces according to an embodiment of the present invention from another perspective. Figure 4 for Figure 3 Enlarged view of point B in the middle; Figure 5 This is a front view of a plasma cutting device for cylindrical metal workpieces according to an embodiment of the present invention.

[0017] In the above attached figures: 1. Frame; 11. Guide rail; 2. Rotary disk; 21. Mounting shaft; 22. Second gear; 23. Positioning screw hole; 3. Drive assembly; 31. Drive motor; 32. First gear; 4. Stop block; 41. Oblong hole; 42. Positioning bolt; 43. Flexible pad; 44. Anti-slip texture; 5. Slider; 51. Lead screw; 52. Limit sleeve; 53. Handwheel; 54. Locking screw; 6. Movable seat; 61. Limit rod; 62. Nozzle; 63. Guide wheel; 7. Protective cover. Detailed Implementation

[0018] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0019] like Figures 1 to 5 As shown in the figure, this utility model embodiment proposes a plasma cutting device for cylindrical metal workpieces, which is used to cut the formed cylindrical metal workpieces to remove excess material from the workpieces and make the length of the workpieces meet the requirements.

[0020] Please refer to Figure 1 , Figure 2 and Figure 3The plasma cutting device for cylindrical metal workpieces includes a frame 1. The frame 1 has a rotating disk 2 that can rotate vertically and a drive assembly 3 that is connected to the rotating disk 2. The rotating disk 2 is used to place the workpiece to be cut, and the workpiece is placed vertically on the rotating disk 2. Multiple detachable stops 4 are spaced apart along the circumference of the rotating disk 2. After the workpiece is placed on the rotating disk 2, the stops 4 are installed on the rotating disk 2 so that the rotating disk 2 is in contact with the side wall of the workpiece to position the workpiece. When the rotating disk 2 rotates under the drive assembly 3, it can drive the workpiece to rotate synchronously. The frame 1 also has a slider 5 that can rise and fall vertically. The slider 5 has a rotatable lead screw 51, the axis of which is aligned with the vertical direction. The frame 1 has a screw that cooperates with the lead screw 51. The slider 5 is equipped with a movable seat 6 that can move radially along the rotating disk 2. The movable seat 6 is equipped with a limiting rod 61, the axial direction of which is parallel to the radial direction of the rotating disk 2. The slider 5 is equipped with a limiting sleeve 52 that cooperates with the limiting rod 61. The movable seat 6 is equipped with a nozzle 62, the output end of which faces the center of the rotating disk 2. By rotating the lead screw 51, the height of the slider 5 can be adjusted to move the nozzle 62 vertically. By sliding the limiting rod 61 within the limiting sleeve 52, the distance between the nozzle 62 and the workpiece can be changed so that the position of the nozzle 62 corresponds to the position of the workpiece to be cut. The nozzle 62 cooperates with an external plasma generator to spray the plasma generated by the plasma generator onto the workpiece, thereby cutting the workpiece.

[0021] Specifically, the operation steps for cutting a cylindrical metal workpiece using the plasma cutting device for cylindrical metal workpieces provided in this embodiment are as follows: The workpiece to be cut is placed vertically on the rotating disk 2. After the workpiece is placed on the rotating disk 2, the stop block 4 is installed on the rotating disk 2 so that the stop block 4 fits against the side wall of the workpiece, thus positioning the workpiece. Then, the height of the slider 5 is adjusted by rotating the lead screw 51 to change the height of the nozzle 62, so that the nozzle 62 corresponds to the position to be cut on the workpiece. The nozzle 62 is brought closer to the workpiece by sliding the limiting rod 61 within the limiting sleeve 52. After the nozzle 62 is adjusted to the correct position, the driving assembly 3 is activated to drive the rotating disk 2 to rotate and drive the workpiece to rotate synchronously. At the same time, the external plasma generator is activated so that the nozzle 62 sprays plasma onto the workpiece for cutting. After the workpiece rotates one revolution, the plasma ejected from the nozzle 62 cuts off the excess part of the workpiece. Then, the driving assembly 3 and the plasma generator are turned off, and the cut workpiece and the cut material are removed from the rotating disk 2. The plasma cutting device for cylindrical metal workpieces provided in this embodiment cuts the workpiece vertically on the rotating disk 2, which can easily position the workpiece to be cut, is simple to operate, and helps to improve the processing efficiency of cylindrical metal workpieces.

[0022] like Figure 1 and Figure 4 As shown, the rotating disk 2 is provided with a mounting shaft 21, and the center of the rotating disk 2 is located on the axis of the mounting shaft 21. The frame 1 is provided with a mounting seat that cooperates with the mounting shaft 21. By setting the mounting seat on the frame 1 to cooperate with the mounting shaft 21 on the rotating disk 2, the rotating disk 2 and the frame 1 are rotatably connected, ensuring the stable cooperation between the rotating disk and the frame 1, which helps to improve the reliability of the plasma cutting device for cylindrical metal workpieces.

[0023] In this embodiment, the drive assembly 3 includes a drive motor 31 and a first gear 32 disposed at the output end of the drive motor 31. A second gear 22 that meshes with the first gear 32 is provided on the mounting shaft 21. The power output by the drive motor 31 is transmitted to the mounting shaft 21 through the meshing of the first gear 32 and the second gear 22, enabling the rotating disk 2 to rotate smoothly under the drive of the drive motor 31, thus ensuring the stable operation of the plasma cutting device for the cylindrical metal workpiece.

[0024] Please combine Figure 3 and Figure 4The rotating disk 2 has multiple positioning screw holes 23 spaced radially along its surface. The stop block 4 has an elongated hole 41, within which a positioning bolt 42 is installed. The elongated hole 41 communicates with one of the positioning screw holes 23, and the positioning bolt 42 engages with the corresponding positioning screw hole 23. The stop block 4 is mounted to the rotating disk 2 via the engagement of the positioning bolt 42 with the screw hole. The position of the stop block 4 on the rotating disk 2 can be adjusted by the engagement of the positioning bolt 42 with different positions of the positioning screw hole 23 and by the sliding of the positioning bolt 42 within the elongated hole 41. This allows the stop block 4 to move to a position that fits against the side wall of the workpiece, thus meeting the requirements for processing workpieces of different diameters.

[0025] In detail, the side of the stop block 4 near the center of the rotating disk 2 is covered with a flexible pad 43, and the surface of the flexible pad 43 has anti-slip texture 44. The flexible pad 43 is provided on the side of the stop block 4 that contacts the workpiece. The flexible pad 43 is made of silicone or rubber, which makes the surface of the stop block 4 soft to prevent the workpiece from being scratched by the stop block 4. The anti-slip texture 44 on the surface of the flexible pad 43 increases the friction between the stop block 4 and the workpiece, thereby improving the stability of the fit between the stop block 4 and the workpiece and ensuring that the rotating disk 2 stably drives the workpiece to rotate when it rotates.

[0026] Please refer to Figure 1 The frame 1 is also provided with a guide rail 11, the length direction of which is consistent with the vertical direction, and the slider 5 cooperates with the guide rail 11. The guide rail 11 provided on the frame 1 is used to cooperate with the slider 5 to realize the sliding connection between the slider 5 and the frame 1, and to restrict the movement direction of the slider 5 on the frame 1, so as to prevent the slider 5 from deviating from the preset direction when moving.

[0027] Specifically, the lead screw 51 is equipped with a handwheel 53, which is fixedly connected to the end of the lead screw 51 away from the slider 5. By operating the handwheel 53, the lead screw 51 can be rotated and the position of the slider 5 can be adjusted, facilitating the use of the plasma cutting device for cylindrical metal workpieces.

[0028] Please combine Figure 1 and Figure 2 The movable seat 6 is provided with two guide wheels 63 that can rotate in a vertical direction, and the two guide wheels 63 are respectively located on opposite sides of the nozzle 62. The two guide wheels 63 are used to contact the surface of the workpiece to keep the nozzle 62 at a certain distance from the workpiece, and when the workpiece rotates under the drive of the rotating disk 2, the guide wheels 63 roll on the surface of the workpiece to avoid collision between the nozzle 62 and the workpiece and prevent damage to the nozzle 62.

[0029] In detail, the limiting sleeve 52 is provided with a locking screw hole and a locking screw 54 that mates with the locking screw hole. One end of the locking screw 54 abuts against the limiting rod 61. After the movable seat 6 is moved to a predetermined position by sliding the limiting rod 61 within the limiting sleeve 52, the locking screw 54 is rotated to abut against the limiting rod 61, thereby locking the position of the limiting rod 61 and preventing unexpected movement of the movable seat 6 during the cutting process. When it is necessary to adjust the position of the movable seat 6, simply rotate the locking screw 54 to move it away from the limiting rod 61. The operation is simple.

[0030] like Figure 1 and Figure 3 As shown, the frame 1 is also equipped with a protective cover 7, which is located on the side of the rotating disk 2 away from the nozzle 62. The protective cover 7 is used to prevent molten slag from splashing during the cutting process and to prevent excess material on the workpiece from falling outside the frame 1 after being cut off, thereby improving the safety of the plasma cutting device for cylindrical metal workpieces.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A cylindrical metal workpiece plasma cutting apparatus, characterized by: The device includes a frame, on which a rotating disk rotatable in a vertical direction and a drive assembly connected to the rotating disk are mounted. Multiple detachable stops are spaced circumferentially on the rotating disk. The frame also includes a slider that can move vertically. A rotatable lead screw is mounted on the slider, with its axis aligned with the vertical direction. A threaded hole mates with the lead screw on the frame. A movable seat is mounted on the slider, which can move radially along the rotating disk. A limiting rod is mounted on the movable seat, with its axis parallel to the radial direction of the rotating disk. A limiting sleeve mates with the limiting rod on the slider. A nozzle is mounted on the movable seat, with its output end facing the center of the rotating disk.

2. A cylindrical metal workpiece plasma cutting apparatus as defined in claim 1, wherein: The rotating disk is provided with a mounting shaft, the center of the rotating disk is located on the axis of the mounting shaft, and the frame is provided with a mounting seat that cooperates with the mounting shaft.

3. A cylindrical metal workpiece plasma cutting apparatus as defined in claim 2 wherein: The drive assembly includes a drive motor and a first gear disposed at the output end of the drive motor, and a second gear that cooperates with the first gear is provided on the mounting shaft.

4. A cylindrical metal workpiece plasma cutting apparatus as defined in claim 1, wherein: The rotating disk is provided with a plurality of positioning screw holes at radial intervals along the rotating disk, and the stop block is provided with an elongated hole. A positioning bolt is provided in the elongated hole. The elongated hole communicates with one of the positioning screw holes and the positioning bolt engages with the corresponding positioning screw hole.

5. A cylindrical metal workpiece plasma cutting apparatus as defined in claim 1 wherein: The side of the stop block closest to the center of the rotating disk is covered with a flexible pad, and the surface of the flexible pad has anti-slip texture.

6. A cylindrical metal workpiece plasma cutting apparatus as defined in claim 1, wherein: The frame is also equipped with a guide rail, the length direction of which is consistent with the vertical direction, and the slider cooperates with the guide rail.

7. A cylindrical metal workpiece plasma cutting apparatus as defined in claim 1 wherein: The lead screw is equipped with a handwheel, which is fixedly connected to the end of the lead screw away from the slider.

8. A cylindrical metal workpiece plasma cutting apparatus as defined in claim 1, wherein: The movable seat is provided with two guide wheels that can rotate in the vertical direction, and the two guide wheels are located on opposite sides of the nozzle.

9. A cylindrical metal workpiece plasma cutting apparatus as defined in claim 1 wherein: The limiting sleeve is provided with a locking screw hole and a locking screw that cooperates with the locking screw hole, and one end of the locking screw abuts against the limiting rod.

10. A cylindrical metal workpiece plasma cutting apparatus as defined in claim 1, wherein: The frame is also equipped with a protective cover, which is located on the side of the rotating disk away from the nozzle.

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