A structure and method for laser cutting a tube

Abstract

The present application relates to the field of laser cutting equipment, provide a kind of structure and method for laser cutting pipe, to solve the problem of insufficient precision of existing pipe cutting machine coaxiality difficult control, its structure includes slide rail, first chuck, second chuck, laser cutting head, support roller and first drive;First chuck can slide along slide rail, second chuck is hollow and arranged at the end of slide rail, at least two support rollers are located between them, the arc surface is processed into multi-specification groove by multiple steps, and the support roller is rotated to the corresponding angle by the first drive to adapt to different pipe diameters. When using, first adapt the pipe diameter, place the pipe in the support roller groove, clamp and adjust the length of extension in turn by two chucks, and then cut by the laser cutting head. The structure is adapted to different pipes by multi-specification groove, and the two support rollers ensure the accurate centering of the chuck, greatly improving the cutting precision and being convenient to operate.

Description

Technical Field

[0001] This invention belongs to the field of laser cutting equipment, and specifically relates to a structure and method for laser cutting pipes. Background Technology

[0002] Patent CN210677408U discloses a pipe cutting machine. This machine uses a tail-end clamp to hold the tail of a pipe and pushes it forward. The pipe slides on rollers until it extends a preset length, at which point the head-end clamp holds the pipe and cuts it. By rotating variable-diameter rollers, different sizes and models of pipes can be supported. The extension and retraction of a cylinder adjusts the height of the rollers, achieving leveling. However, the coaxiality of the tail-end and head-end clamps in this pipe cutting machine is difficult to control. Therefore, it is more suitable for pipe cutting scenarios where the perpendicularity of the cut and the cutting length accuracy are not high, but not for processing scenarios with higher precision requirements. Therefore, improvements are needed. Summary of the Invention

[0003] The structure and method for laser cutting pipes provided by this invention can effectively solve the problems in the background art and improve processing accuracy.

[0004] This invention provides a structure and method for laser cutting tubing, comprising a slide rail, a first chuck, a second chuck, a laser cutting head, support rollers, and a first drive; the first chuck is disposed on the slide rail and can slide back and forth along the slide rail; the second chuck is disposed at the end of the slide rail and is a hollow chuck; the laser cutting head is used to cut the circular tube held by the second chuck; at least two support rollers are provided, both located between the first and second chucks, and the arc-shaped surface of the support rollers has grooves for supporting the circular tube, the grooves being processed as follows:

[0005] S1. Fix the support roller horizontally, and machine a cylindrical first groove on the upper arc-shaped surface of the support roller. The cross-sectional radius of the first groove is... The axis of the first groove is perpendicular to the axis of the support roller, and the perpendicular distance from the axis of the first groove to the axis of the support roller is h. The axis of the first groove can be collinear with the center lines of the first chuck and the second chuck.

[0006] S2. Rotate the support roller around its axis by an angle θ in the clockwise or counterclockwise direction;

[0007] S3. A cylindrical second groove is machined on the upper part of the support roller. The cross-sectional radius of the second groove is... , < The axis of the second groove is perpendicular to the axis of the support roller, and the perpendicular distance from the axis of the second groove to the axis of the support roller is h. The axis of the second groove can be collinear with the center lines of the first chuck and the second chuck.

[0008] S4. Repeat steps S2 and S3 n times until a cylindrical (n+1)th groove is machined on the upper part of the support roller. The cross-sectional radius of the (n+1)th groove is... , < The centerline of the (n+1)th groove is perpendicular to the centerline of the support roller. The perpendicular distance from the centerline of the (n+1)th groove to the centerline of the support roller is h. The centerline of the (n+1)th groove can be collinear with the centerlines of the first chuck and the second chuck, and (n+1)θ≤360°.

[0009] The first drive drives the support roller to rotate about its axis by an integer multiple of θ.

[0010] As a further optimization of the present invention, the first drive adopts an electric motor.

[0011] The structure for laser cutting tubing according to claim 1 is characterized in that the first drive is manual; the side of the support roller is provided with n+1 blind holes arranged in a circumferential array, wherein the plane coplanar with the axis of the first blind hole and the axis of the support roller bisects the first groove in step S1; it also includes a support plate and a rod; the support plate is fixedly installed on the side of the support roller, the support roller and the support plate are rotatably connected, the support plate is provided with through holes corresponding to the blind holes, the through holes are located directly above the axis of the support roller; one end of the rod passes through the through hole and is inserted into the blind hole to prevent the support roller from rotating.

[0012] As a further optimization of the invention, a handle is also included, which is connected to the other end of the plug and perpendicular to each other.

[0013] As a further optimization of the present invention, blind holes are provided on both sides of the support roller; two support plates and two insertion rods are provided, respectively corresponding to the two sides of the support roller.

[0014] As a further optimization of the present invention, it also includes a frame; two slide rails are provided and are arranged parallel to each other on the frame; the first chuck and the second chuck are both located in the middle position of the two slide rails.

[0015] As a further optimization of the present invention, a telescopic dust cover is provided on the slide rail.

[0016] As a further optimization of the present invention, a second drive is also included, which drives the first chuck to slide back and forth on the slide rail.

[0017] As a further optimization of the present invention, the first chuck and the second chuck are electrically powered three-jaw chucks or four-jaw chucks.

[0018] The present invention also provides a method of using the aforementioned structure for laser cutting tubing, characterized by comprising the following steps:

[0019] S1: The first drive drives the support roller to rotate around its axis to a set angle to match the diameter of the pipe to be cut;

[0020] S2: Place the pipe to be cut on the grooves of the two support rollers;

[0021] S3: Push the pipe to be cut so that one end of the pipe is inserted into the first chuck which is in the open position;

[0022] S4: The first chuck clamps the pipe to be cut;

[0023] S5: Drive the first chuck to slide along the length of the slide rail, so that the other end of the pipe to be cut passes through the second chuck in the open state, and the length of the pipe extending out of the second chuck is a set distance;

[0024] S6: The second chuck clamps the pipe to be cut;

[0025] S7: The laser cutting head cuts the pipe to be cut.

[0026] This invention provides a structure and method for laser cutting pipes. Multiple grooves of various specifications are provided on the arc-shaped surface of the support roller to adapt to pipes of different diameters. By rotating the support roller to a suitable angle, the pipes of different diameters can be adapted. Two support rollers are provided, which can accurately align the first chuck and the second chuck while supporting the pipe. This not only facilitates the cutting operation but also significantly improves the cutting accuracy. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this embodiment;

[0028] Figure 2 yes Figure 1 Schematic diagram of the retractable dust cover (without showing the actual design);

[0029] Figure 3 yes Figure 1 Schematic diagram of the installation of the middle support roller;

[0030] Figure 4 yes Figure 1 Schematic diagram of the middle support roller;

[0031] Figure 5 yes Figure 1 Diagram of the middle insert rod and handle;

[0032] Figure 6This is a schematic diagram of the machining model of the first groove supporting the roller in this embodiment. The yellow part in the figure is the cylindrical machining surface that generates the first groove.

[0033] Figure 7 This is a schematic diagram showing the location of the first blind hole. The blue frame in the diagram represents the plane formed by the center line of the support roller and the center line of the first blind hole.

[0034] Figure 8 This is a schematic diagram of the machining model of the second groove supporting the roller in this embodiment. The yellow part in the figure is the cylindrical machining surface for generating the second groove.

[0035] The components include: slide rail 1, first chuck 2, second chuck 3, laser cutting head 4, support roller 5, groove 5a, first groove 5a1, second groove 5a21, blind hole 5b, support plate 6, through hole 6a, insertion rod 7, handle 8, frame 9, telescopic dust cover 10, and second drive 11. Detailed Implementation

[0036] like Figure 1-4 As shown in the figure, the structure and method for laser cutting pipes disclosed in this embodiment are intended to achieve rapid adaptation and precise cutting of pipes with different diameters. The structural composition and usage process are detailed below.

[0037] The structure for laser cutting tubing includes a frame 9, a slide rail 1, a first chuck 2, a second chuck 3, a laser cutting head 4, a support roller 5, a first drive, a support plate 6, an insertion rod 7, a handle 8, and a second drive 11.

[0038] The frame 9 serves as the overall support base, providing an installation benchmark for all components. Two slide rails 1 are provided, arranged parallel to each other on the frame 9. The slide rails 1 are equipped with telescopic dust covers 10 to prevent dust and debris generated during the cutting process from entering the gaps of the slide rails 1, ensuring the smooth sliding of the slide rails 1 and extending their service life.

[0039] Both the first chuck 2 and the second chuck 3 are positioned in the middle of the two slide rails 1 to ensure balanced force when clamping the pipe. The first chuck 2 is mounted on the slide rail 1 and can slide back and forth along its length. The second chuck 3 is fixed to the end of the slide rail 1 and has a hollow structure, facilitating the passage of the pipe and its extension into the cutting area of ​​the laser cutting head 4. Both the first chuck 2 and the second chuck 3 are electrically operated three-jaw or four-jaw chucks with automatic centering function, enabling rapid clamping and releasing of the pipe and improving operational efficiency.

[0040] At least two support rollers 5 are provided, both arranged between the first chuck 2 and the second chuck 3, to support the pipe to be cut and ensure its stability during clamping and cutting. The arc-shaped surface of the support rollers 5 is machined with multiple grooves 5a to accommodate different pipe diameters. The machining process of each groove 5a is as follows:

[0041] The support roller 5 is placed horizontally and fixed. The first cylindrical groove 5a1 is machined on the upper arc surface of the support roller 5. The axis of the first groove 5a1 is perpendicular to the axis of the support roller 5, and the vertical distance from the axis of the first groove 5a1 to the axis of the support roller 5 is kept fixed. At the same time, the axis of the first groove 5a1 can be collinear with the center line of the first chuck 2 and the second chuck 3 to ensure that the pipe can be accurately aligned after placement.

[0042] Rotate the support roller 5 around its own axis in the forward or reverse direction by a certain angle;

[0043] At the upper position after the support roller 5 has rotated, another cylindrical second groove 5a2 is processed. The cross-sectional size of the second groove 5a2 is smaller than that of the first groove 5a1. The axis of the second groove 5a2 remains perpendicular to the axis of the support roller 5, and the vertical distance from the axis of the second groove 5a2 to the axis of the support roller 5 is the same as that of the first groove 5a1. The axis of the second groove 5a2 can also be collinear with the center lines of the first chuck 2 and the second chuck 3.

[0044] Repeat the above rotation and processing steps several times until the required number of grooves 5a are processed on the upper arc surface of the support roller 5. All grooves 5a are evenly distributed along the circumference of the support roller 5, and the total angle of multiple rotations does not exceed 360°, ensuring that each groove 5a can effectively utilize the arc surface space of the support roller 5.

[0045] The first drive is used to drive the support roller 5 to rotate around its axis, and the rotation angle is an integer multiple of the single rotation angle mentioned above, so as to realize the rapid switching of different grooves 5a. In this embodiment, the first drive can be manually driven, and the specific structure is as follows: both sides of the support roller 5 are provided with blind holes 5b arranged in a circular array. The number of blind holes 5b is the same as the number of grooves 5a. The plane coplanar between the axis of the first blind hole 5b and the axis of the support roller 5 exactly bisects the first processed groove 5a. It should be noted that the first blind hole 5b serves as a reference hole. Subsequent blind holes 5b are all arranged in a circular array with equal spacing, based on the first blind hole 5b. Only when the first blind hole 5b meets the structural requirements of this embodiment can it be ensured that the groove 5a can fit properly to support the round tube, thereby improving the alignment accuracy of the round tube with the first chuck 2 and the second chuck 3.

[0046] Two support plates 6 are provided, respectively fixedly mounted on the two sides of the support roller 5. The support roller 5 and the support plate 6 are rotatably connected by a rotating shaft. A through hole 6a is provided on the support plate 6 at the position corresponding to the blind hole 5b, and the through hole 6a is located directly above the axis of the support roller 5. Two insertion rods 7 are provided. One end of the insertion rod passes through the through hole 6a on the support plate 6 and is inserted into the blind hole 5b on the side of the support roller 5 to restrict the rotation of the support roller 5 and lock the position of the groove 5a. The other end of the insertion rod 7 is connected to a handle 8, which is perpendicular to the insertion rod 7, making it easy for the operator to insert and remove the insertion rod 7 and improving the ease of operation. In other embodiments, the first drive can also be a stepper motor configured to rotate at equal angles.

[0047] The second drive 11 is connected to the first chuck 2 and is used to drive the first chuck 2 to slide back and forth along the length of the slide rail 1 to realize the feeding and positioning of the pipe to be cut. The second drive 11 can specifically use a motor with a gear and rack to achieve the function. This structure is common knowledge in the field and will not be described in detail here.

[0048] The laser cutting head 4 is positioned on the outside of the second chuck 3 and aligned with the protruding end of the tube held by the second chuck 3, for high-precision cutting of the tube.

[0049] Based on the above structure for laser cutting of tubing, its usage includes the following steps:

[0050] The operator pulls out the insertion rod 7 through the handle 8 to release the lock on the support roller 5. According to the diameter of the pipe to be cut, the operator manually rotates the support roller 5 around its axis to a set angle so that the groove 5a that is adapted to the pipe diameter rotates to the upper center position. Then the insertion rod 7 is inserted into the blind hole 5b at the corresponding position and the support roller 5 is locked again.

[0051] The pipe to be cut is placed stably on the matching grooves 5a of the two support rollers 5. The centering of the pipe is initially achieved by using the limiting effect of the grooves 5a.

[0052] Manually push the pipe to be cut so that one end of the pipe extends into the first chuck 2, which is in the open position;

[0053] The electric control mechanism of the first chuck 2 is activated, and the first chuck 2 clamps the pipe to be cut;

[0054] Start the second drive 11, drive the first chuck 2 to slide along the length of the slide rail 1 to the side of the second chuck 3, drive the pipe to be cut to move synchronously, so that the other end of the pipe passes through the second chuck 3 in the open state, and after the length of the pipe extending out of the second chuck 3 reaches the preset cutting length, the second drive 11 stops working.

[0055] The electric control mechanism of the second chuck 3 is activated, and the second chuck 3 clamps the pipe to be cut. At this time, the pipe is positioned at three points through the first chuck 2, the second chuck 3 and the support roller 5 to ensure stability during the cutting process.

[0056] Start the laser cutting head 4. The laser cutting head 4 precisely cuts the protruding end of the pipe to be cut. After the cutting is completed, the first chuck 2 and the second chuck 3 are released, and the cut pipe is taken out, completing one cutting operation.

[0057] Through the above structural design and usage method, this embodiment can quickly adapt to pipes of different diameters without replacing support components. Furthermore, the precise alignment of the pipe is achieved through the collaboration of multiple components, effectively improving cutting accuracy and operational efficiency. It is suitable for laser cutting scenarios of various specifications of round pipes.

[0058] It should be understood that the descriptions of directions or positional relationships such as up, down, left, right, front, back, top, bottom, tail, horizontal and vertical in this application are all based on the accompanying drawings in the specification and are only used to express the technical solution more clearly and simplify the description, rather than indicating or implying that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this application.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention 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 the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A structure for laser cutting tubing, characterized in that, The system includes a slide rail, a first chuck, a second chuck, a laser cutting head, support rollers, and a first drive. The first chuck is mounted on the slide rail and can slide back and forth along it. The second chuck is located at the end of the slide rail and is a hollow chuck. The laser cutting head is used to cut the circular tube held by the second chuck. At least two support rollers are provided, both located between the first and second chucks. The arc-shaped surface of each support roller has a groove for supporting the circular tube. The groove is fabricated as follows: S1. Fix the support roller horizontally, and machine a cylindrical first groove on the upper arc-shaped surface of the support roller. The cross-sectional radius of the first groove is... The axis of the first groove is perpendicular to the axis of the support roller, and the perpendicular distance from the axis of the first groove to the axis of the support roller is h. The axis of the first groove can be collinear with the center lines of the first chuck and the second chuck. S2. Rotate the support roller around its axis by an angle θ in the clockwise or counterclockwise direction; S3. A cylindrical second groove is machined on the upper part of the support roller. The cross-sectional radius of the second groove is... , < The axis of the second groove is perpendicular to the axis of the support roller, and the perpendicular distance from the axis of the second groove to the axis of the support roller is h. The axis of the second groove can be collinear with the center lines of the first chuck and the second chuck. S4. Repeat steps S2 and S3 n times until a cylindrical (n+1)th groove is machined on the upper part of the support roller. The cross-sectional radius of the (n+1)th groove is... , < The centerline of the (n+1)th groove is perpendicular to the centerline of the support roller. The perpendicular distance from the centerline of the (n+1)th groove to the centerline of the support roller is h. The centerline of the (n+1)th groove can be collinear with the centerlines of the first chuck and the second chuck, and (n+1)θ≤360°. The first drive drives the support roller to rotate about its axis by an integer multiple of θ.

2. The structure for laser-cutting tubing according to claim 1, characterized in that, The primary drive system uses an electric motor.

3. The structure for laser-cutting tubing according to claim 1, characterized in that, The first drive is manual; the side of the support roller is provided with n+1 blind holes arranged in a circumferential array, wherein the plane coplanar with the axis of the first blind hole and the axis of the support roller bisects the first groove in step S1; it also includes a support plate and a rod; the support plate is fixedly set and is located on the side of the support roller, the support roller and the support plate are rotatably connected, the support plate is provided with through holes corresponding to the blind holes, the through holes are located directly above the axis of the support roller; one end of the rod passes through the through hole and is inserted into the blind hole to prevent the support roller from rotating.

4. The structure for laser-cutting tubing according to claim 3, characterized in that, It also includes a handle, which is connected to the other end of the plug and is perpendicular to each other.

5. The structure for laser-cutting tubing according to claim 3, characterized in that, Blind holes are provided on both sides of the support roller; two support plates and two insertion rods are provided, respectively corresponding to the two sides of the support roller.

6. The structure for laser-cutting tubing according to claim 1, characterized in that, It also includes a frame; two slide rails are provided and are arranged parallel to each other on the frame; the first chuck and the second chuck are both located in the middle of the two slide rails.

7. The structure for laser-cutting tubing according to claim 6, characterized in that, The slide rail is equipped with a retractable dust cover.

8. The structure for laser-cutting tubing according to claim 1, characterized in that, It also includes a second drive, which drives the first chuck to slide back and forth on the slide rail.

9. The structure for laser-cutting tubing according to claim 1, characterized in that, The first and second chucks are electrically powered three-jaw or four-jaw chucks.

10. A method of using the structure for laser cutting tubing as described in claim 1, characterized in that, Includes the following steps: S1: The first drive drives the support roller to rotate around its axis to a set angle to match the diameter of the pipe to be cut; S2: Place the pipe to be cut on the grooves of the two support rollers; S3: Push the pipe to be cut so that one end of the pipe is inserted into the first chuck which is in the open position; S4: The first chuck clamps the pipe to be cut; S5: Drive the first chuck to slide along the length of the slide rail, so that the other end of the pipe to be cut passes through the second chuck in the open state, and the length of the pipe extending out of the second chuck is a set distance; S6: The second chuck clamps the pipe to be cut; S7: The laser cutting head cuts the pipe to be cut.

Images