A laser cutting steel pipe port device

Abstract

The utility model provides a kind of laser cutting steel pipe port device, including laser gun, offcut hanging mechanism and the center line horizontal arrangement carousel, the through-hole is arranged in the center of carousel, and the clamping mechanism is arranged in one end surface of carousel, steel pipe traverses the through-hole and is clamped and fixed by clamping mechanism, and the port cutting end of steel pipe is located in the side of clamping mechanism deviating from carousel, and the laser head position of laser gun corresponds with the port cutting end of steel pipe, and laser head vertically downward is directed to steel pipe, and the offcut hanging mechanism includes fixed shaft, and one end is fixed in support, and the other end extends to steel pipe, and it is located in laser head directly below, and it is used for hanging offcut formed after steel pipe cutting port, in the utility model, the fixed shaft extending to steel pipe is located in laser head directly below, can block laser beam, avoid the phenomenon that laser beam penetrates simultaneously upper and lower pipe wall of steel pipe, and it is for the port processing of thin-walled steel pipe, guarantee the effectiveness of port processing.

Description

Technical Field

[0001] This utility model belongs to the field of steel pipe cutting production, and in particular relates to a laser cutting device for steel pipe ends. Background Technology

[0002] Currently, laser cutting is widely used in steel pipe production. By laser cutting the ends of steel pipes, the shape of the ends can meet the connection requirements of steel pipes. For example, for a tee pipe structure, the side steel pipe ends of the tee pipe are cut into a saddle shape to correspond to the saddle opening in the main pipe wall of the tee pipe. Then, the saddle-shaped ends of the steel pipe and the saddle opening of the main pipe are aligned and welded to form a tee pipe structure. Another example is a 90° right-angle bend pipe structure, which requires cutting the ends of the two steel pipes to be joined into 45° bevel structures. Then, the two bevels are joined to form a 90° bend pipe structure.

[0003] During production, there is a lack of a separate device to support the annular scrap material formed after laser cutting of steel pipes. The scrap material directly enters the collection box. Because the scrap material has a certain weight and carries cutting debris, it causes a lot of noise from the falling material and debris splashing. In addition, for thin-walled steel pipes, if the laser head is not positioned properly, such as being too close to the steel pipe, the laser beam may sometimes penetrate the upper wall of the steel pipe and reach the lower wall simultaneously. This results in the end processing failing, forming an invalid cut, and requiring re-clamping and re-cutting of the steel pipe end, causing production inconvenience. Utility Model Content

[0004] In view of this, the present invention aims to provide a laser cutting device for steel pipe ends, so as to avoid the above-mentioned problems when laser cutting steel pipe ends.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] A laser cutting device for steel pipe ends includes a laser gun, a scrap material hanging mechanism, and a turntable with its center line horizontally arranged. A through hole is provided at the center of the turntable, and a clamping mechanism is provided on one end face of the turntable. The steel pipe passes through the through hole and is clamped and fixed by the clamping mechanism. The end of the steel pipe to be cut is located on the side of the clamping mechanism away from the turntable. The laser head of the laser gun is positioned corresponding to the end of the steel pipe to be cut, and the laser head is vertically downward facing the steel pipe. The scrap material hanging mechanism includes a fixed shaft, one end of which is fixed to a bracket, and the other end extends into the steel pipe, located directly below the laser head, for hanging the scrap material formed after the steel pipe is cut.

[0007] Furthermore, the clamping mechanism is a three-jaw chuck or a four-jaw chuck structure that is concentrically arranged with the turntable.

[0008] Furthermore, a protective sleeve is fitted onto one end of the fixed shaft that extends into the steel pipe 1. The protective sleeve is a high-temperature resistant protective sleeve.

[0009] Furthermore, the protective sleeve is a ceramic steel sleeve.

[0010] Furthermore, the surface of the protective sleeve is provided with multiple protrusions.

[0011] Furthermore, the length of the fixed shaft extending into the steel pipe is not less than the length of the longest busbar of the hanging scrap material.

[0012] Furthermore, the bracket is mounted on the cross slide module, allowing the bracket, along with the fixed axis, to move horizontally and vertically relative to the steel pipe.

[0013] Furthermore, the centerline of the fixed shaft and the centerline of the clamped steel pipe are at the same height.

[0014] Compared with existing technologies, the laser cutting device for steel pipe ends described in this utility model has the following advantages:

[0015] (1) In this utility model, the fixed shaft extending into the steel pipe is located directly below the laser head, which can block the laser beam and avoid the phenomenon that the laser beam penetrates the upper and lower pipe walls of the steel pipe at the same time. This is especially true for the end processing of thin-walled steel pipes, ensuring the effectiveness of end processing.

[0016] (2) In this utility model, the scrap material formed after the steel pipe end is cut is hung on a fixed shaft to prevent falling noise and flying of cutting debris. Attached Figure Description

[0017] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0018] Figure 1 This is a front view of a laser-cut steel pipe end device according to an embodiment of the present invention;

[0019] Figure 2 It is the scrap material from the bevel structure.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1-Steel pipe; 2-Turntable; 3-Clamping mechanism; 4-Scrap material; 41-Longest busbar; 5-Laser head; 6-Protective sleeve; 7-Fixed shaft; 8-Bracket; 9-Cross slide. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] like Figure 1 As shown, a laser-cutting device for steel pipe ends includes a laser gun, a scrap material hanging mechanism, and a turntable 2. The turntable 2 is horizontally centered and can be rotatably mounted on a support frame via a slewing bearing (omitted in the attached diagram). A corresponding drive mechanism drives the slewing bearing to rotate, which in turn drives the turntable. This structure is a common turntable mounting structure, well-known to those skilled in the art, and will not be described in detail here. A through hole is provided at the center of the turntable 2 for the steel pipe 1 to be processed to pass through. A clamping mechanism 3 is provided on the right end face of the turntable 2. The clamping mechanism 3 is a three-jaw or four-jaw chuck structure concentrically arranged with the turntable 2. The steel pipe 1, passing through the through hole of the turntable 2, is clamped and fixed by the clamping mechanism. At this time, the end of the steel pipe 1 to be cut is located on the right side of the clamping mechanism, that is, the side of the clamping mechanism away from the turntable 2. The laser head 5 of the laser gun is positioned corresponding to the end of the steel pipe to be cut, and the laser head 5 is vertically downward facing the steel pipe 1. The scrap material hanging mechanism is located on the right side of the clamping mechanism, including a fixed shaft 7 and a movable bracket 8. The fixed shaft 7 is positioned corresponding to the end of the steel pipe 1. The right end of the fixed shaft 7 is fixed to the bracket 8, and the left end extends into the steel pipe 1. The portion of the fixed shaft 7 extending into the steel pipe 1 is located directly below the laser head 5. At this time, the laser head 5, the upper wall of the steel pipe 1, the fixed shaft 7, and the lower wall of the steel pipe 1 are arranged sequentially from top to bottom. The fixed shaft 7 can prevent the laser from penetrating the lower wall of the pipe, preventing ineffective cutting. In addition, it can hang the scrap material formed after the cutting end of the steel pipe 1, separating the scrap material from the steel pipe.

[0024] In this invention, the length of the fixed shaft 7 extending into the steel pipe 1 is not less than the length of the longest generatrix of the scrap material being mounted. For example, if the end of the steel pipe 1 is cut at a 45° bevel, the resulting scrap material 4 will have the following structure: Figure 2 As shown, one end of the scrap material 4 also has a 45° bevel structure, and the generatrix at the maximum distance between the two ends of the scrap material 4 is its longest generatrix 41. To prevent laser damage to the fixed shaft 7, a protective sleeve 6 is fitted onto the end of the fixed shaft 7 that extends into the steel pipe 1. The protective sleeve 6 is a ceramic protective sleeve with multiple protrusions on its surface to improve its hanging effect on the scrap material. Screws can be used to connect and fix the protective sleeve 6 to the fixed shaft 7. Due to the good high-temperature resistance of the ceramic protective sleeve, damage from high temperatures during laser cutting is effectively avoided, thus improving the service life of the scrap material hanging mechanism.

[0025] In this invention, the bracket 8 is mounted on a cross slide module, which is a horizontal cross slide structure, existing technology and will not be described in detail here. The cross slide module allows the bracket 8, along with the fixed shaft 7, to move horizontally and vertically relative to the steel pipe 1. This slide adopts a manual slide structure, allowing the fixed shaft 7 to be moved to the right of the steel pipe 1 after cutting, removing the hanging scrap material, and then moving the fixed shaft 7 horizontally and perpendicularly to the steel pipe 1 to offset the positions of the fixed shaft 7 and the steel pipe 1 (at this time, the center line of the fixed shaft 7 deviates from the center line of the steel pipe), allowing the steel pipe 1 to be removed from the right side, improving the convenience of loading and unloading the steel pipe.

[0026] The operation process of this utility model is as follows: First, the steel pipe 1 is passed through the through hole of the turntable 2 and clamped and fixed by the clamping mechanism 3. At this time, the cutting end of the steel pipe 1 corresponds to the laser head 5. Then, the end of the fixed shaft 7 with the protective sleeve 6 is inserted into the end of the steel pipe through the cross slide module. The drive mechanism corresponding to the turntable 2 is turned on, and the turntable 2 drives the steel pipe to rotate. The laser head 5 emits laser light to cut the end of the steel pipe 1 to obtain a port structure of the corresponding shape. During the cutting process, the protective sleeve 6 prevents the laser from penetrating the lower wall of the steel pipe 1. After the cutting is completed, the scrap material formed will be hung on the fixed shaft. Then, the fixed shaft 7 is moved out of the steel pipe 1 through the cross slide module, the scrap material is removed, and finally the steel pipe 1 is removed.

[0027] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A laser-cutting device for steel pipe ends, characterized in that: The device includes a laser gun, a scrap material hanging mechanism, and a turntable (2) with its center line set horizontally. A through hole is provided at the center of the turntable (2), and a clamping mechanism (3) is provided on one end face of the turntable (2). A steel pipe (1) passes through the through hole and is clamped and fixed by the clamping mechanism. The cut end of the steel pipe (1) is located on the side of the clamping mechanism away from the turntable (2). The position of the laser head (5) of the laser gun corresponds to the cut end of the steel pipe. The laser head (5) is vertically downward facing the steel pipe (1). The scrap material hanging mechanism includes a fixed shaft (7), one end of which is fixed to a bracket (8), and the other end extends into the steel pipe (1) and is located directly below the laser head (5). It is used to hang the scrap material formed after the steel pipe (1) is cut.

2. The laser cutting device for steel pipe ends according to claim 1, characterized in that: The clamping mechanism (3) is a three-jaw chuck or a four-jaw chuck structure that is concentrically arranged with the turntable (2).

3. The laser cutting device for steel pipe ends according to claim 1, characterized in that: The fixed shaft (7) is fitted with a protective sleeve (6) at one end that extends into the steel pipe (1). The protective sleeve (6) is a high-temperature resistant protective sleeve.

4. The laser cutting device for steel pipe ends according to claim 3, characterized in that: The protective sleeve (6) is a ceramic steel sleeve.

5. The laser cutting device for steel pipe ends according to claim 3, characterized in that: The protective sleeve (6) has multiple protrusions on its surface.

6. The laser cutting device for steel pipe ends according to claim 1, characterized in that: The length of the fixed shaft (7) extending into the steel pipe (1) is not less than the length of the longest busbar of the hanging scrap material.

7. The laser cutting device for steel pipe ends according to claim 1, characterized in that: The bracket (8) is mounted on the cross slide module, allowing the bracket (8) and the fixed shaft (7) to move in the horizontal plane relative to the steel pipe (1) in both parallel and vertical directions.

8. The laser cutting device for steel pipe ends according to claim 1, characterized in that: The centerline of the fixed shaft (7) is at the same height as the centerline of the clamped steel pipe (1).

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