Three-head synchronous laser pipe cutting machine

Abstract

The utility model discloses a three-head synchronous laser pipe cutting machine which comprises a machine frame body, a marble base is arranged on the machine frame body, a portal frame and a linear module are arranged on the marble base, three laser cutting heads are fixed to the portal frame, and three clamping feeding mechanisms are arranged on the linear module. The portal frame is used for supporting the laser cutting head, and compared with an existing cantilever, the portal frame is better in stability, so that workpiece errors of synchronous cutting are reduced; the integrated marble is used as a base of the whole movement mechanism, so that all movement parts work more stably; the focus of the laser cutting head is adjusted by a focusing device, and the processing power of the laser is consistent by adjusting the focus; by means of multiple measures, multi-head machining is achieved, the efficiency is improved, and meanwhile the machining precision can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of laser cutting, in particular to a three-head synchronous laser tube cutting machine. Background Art

[0002] The laser cutting machine focuses the laser emitted from the laser into a high-power density laser beam through the optical path system. The laser beam irradiates the surface of the workpiece, causing the workpiece to reach the melting point or boiling point. At the same time, the high-pressure gas coaxial with the beam blows away the molten or vaporized metal.

[0003] Tube cutting is a common task in laser processing, which usually involves radial cutting of tubular or strip workpieces at a certain length. In order to improve processing efficiency, some multi-head tube laser cutting machines are now available on the market. In order to save costs, most of the existing multi-head tube laser cutting machines share a set of control programs, which simultaneously send control instructions to multiple lasers and rotating clamping components, and the lasers and rotating clamping components move synchronously to complete the cutting.

[0004] However, due to slight differences in the laser generator, laser cutting head, rotating parts and moving parts, there will be errors between the synchronously cut workpieces, resulting in processing accuracy that does not meet the requirements; and because multiple sets of moving parts use the same control program, it is impossible to reduce the error through sensor feedback and software programs; at the same time, the existing laser cutting head is installed on a cantilever, which causes fluctuations in the working process and affects the processing error.

[0005] Therefore, how to achieve high-efficiency production through multi-head laser cutting while ensuring processing accuracy has become an urgent problem to be solved. Utility Model Content

[0006] In order to solve the defect of the prior art that the multi-head synchronous cutting has a large error, resulting in the processing accuracy not meeting the requirements, the utility model provides a three-head synchronous laser tube cutting machine.

[0007] The utility model provides the following technical solutions:

[0008] A three-head synchronous laser tube cutting machine comprises a frame body, the frame body is provided with a marble base, the marble base is provided with a gantry and a linear module, three laser cutting heads are fixed on the gantry, and three clamping and feeding mechanisms are provided on the linear module.

[0009] Preferably, a laser placement position is provided at the bottom of the frame body, three laser generators are provided in the laser placement position, and the laser generators are connected to the laser cutting head via optical fibers.

[0010] Preferably, it includes a focusing device, which includes a base, a slide, a waist-shaped hole, a threaded hole and an adjusting screw. The base is installed on the gantry, and the slide is movably installed on the base. The base is provided with a waist-shaped hole, and the slide is provided with a threaded hole. The waist-shaped hole and the threaded hole are fixed by bolts, thereby locking the base and the slide. The adjusting screw is movably installed on the top of the base, and the bottom is threadedly connected to the slide, and the laser cutting head is installed on the slide.

[0011] Preferably, the base is provided with a scale, and the slide is provided with a pointer, and the pointer is located at the scale.

[0012] Preferably, the clamping and feeding mechanism includes a hollow shaft motor, a pneumatic caliper, a bracket and a roller, the hollow shaft motor is mounted on a linear module, a pneumatic caliper is mounted on the head of the hollow shaft motor, the bracket is mounted on the tail of the hollow shaft motor, and the roller is mounted on the bracket.

[0013] Preferably, a round tube bracket and an air clamp are also installed on the marble base, and the number of the round tube bracket and the number of the air clamp are both three.

[0014] Preferably, a closed cutting chamber is provided on the frame body, the laser cutting head extends into the cutting chamber, and an observation port and a dust extraction port are provided on the cutting chamber.

[0015] Preferably, a material receiving drawer is provided at the bottom of the cutting bin.

[0016] Preferably, three material guide slots are provided in the cutting chamber, and the material receiving drawer is divided into three material receiving bins by a baffle, and the positions of the laser generator, the material guide slots and the material receiving bins correspond to each other.

[0017] The beneficial effects of the utility model are: 1. A gantry is used to support the laser cutting head, and the gantry has better stability than the existing cantilever, thereby reducing the error of the workpiece in synchronous cutting; 2. The integrated marble is used as the base of the entire motion mechanism, so that each moving part works more stably; 3. A focusing device is used to adjust the focus of the laser cutting head, and the power of the laser processing is made consistent by adjusting the focus; various measures ensure that the processing accuracy can be guaranteed while realizing multi-head processing to improve efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0021] Figure 3 This utility model Figure 2 A magnified view of part A;

[0022] Figure 4 It is a partial schematic diagram of the utility model;

[0023] Figure 5 It is a top view of the utility model;

[0024] Figure 6 It is the front view of the utility model;

[0025] Figure 7 This is a schematic diagram of the structure of the utility model Figure 3 .

[0026] In the figure: 1. frame body; 101 laser placement position; 2. marble base; 3. gantry; 4. linear module; 5. laser cutting head; 6. clamping and feeding mechanism; 601. hollow shaft motor; 602. pneumatic caliper; 603. bracket 604. roller; 605. round tube bracket; 606. air clamp; 7. focusing device; 701. base; 702. slide; 703. waist-shaped hole; 704. threaded hole; 705. adjusting screw; 706. scale; 707. pointer; 8. laser generator; 9. cutting chamber; 901. observation port; 902. dust extraction port; 903. material guide trough; 10. material receiving drawer; 11. material receiving chamber. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0028] A three-head synchronous laser tube cutting machine comprises a frame body 1, on which a marble base 2 is arranged, on which a gantry 3 and a linear module 4 are arranged, on which three laser cutting heads 5 are fixed, and on which three clamping and feeding mechanisms 6 are arranged, and the three clamping and feeding mechanisms 6 respectively transport tubular or strip materials to be processed for the three laser cutting heads 5. The tube cutting machine can realize three-way cutting operations at the same time, greatly improving the processing efficiency. In order to save costs, the three motion and laser cutting heads adopt the same set of motion control mechanisms. In order to reduce the processing errors between the three sets of tube cutting equipment, the laser cutting head 5 is supported by the gantry 3, and at the same time, the gantry 3 and the linear module 4 are installed on a whole marble base 2, further improving the stability.

[0029] A laser placement position 101 is provided at the bottom of the frame body 1 , and three laser generators 8 are provided in the laser placement position 101 . The three laser generators 8 are respectively connected to three laser cutting heads 5 through optical fibers, and each laser cutting head 5 is equipped with a laser generator 8 .

[0030] Since each laser generator 8 and transmission optical fiber may be slightly different, in order to ensure that the laser power at the processing point of the laser cutting head 5 is consistent, a focusing device 7 is designed. The laser cutting head 5 is installed on the gantry 3 through the focusing device 7. The laser cutting head 5 can be moved up and down through the focusing device 7, thereby adjusting the focal position so that the optical power of the laser at the processing workpiece is the set value.

[0031] The focusing device 7 includes a base 701, a slide 702, a waist-shaped hole 703, a threaded hole 704 and an adjusting screw 705. The base 701 is fixedly mounted on the gantry 3, and the slide 702 is movably mounted on the base 701. The base 701 is provided with a waist-shaped hole 703, and the slide 702 is provided with a threaded hole 704. The waist-shaped hole 703 and the threaded hole 704 are fixed by bolts, so that the base 701 and the slide 702 are locked. The adjusting screw 705 is movably mounted on the top of the base 701, and the bottom is threadedly connected to the slide 702. The slide 702 can move up and down on the base 701. The bolt passes through the waist-shaped hole 703 and is connected to the threaded hole 704, so that the base 701 and the slide 702 are locked. Rotating the adjusting screw 705 can make the slide 702 move up and down conveniently. In order to adjust the focus of the device 7 more accurately, a scale 706 is provided on the base 701 , and a pointer 707 is provided on the slide 702 , and the pointer 707 is located at the scale 706 .

[0032] The laser cutting head 5 is mounted on the slide 702 , and the laser cutting head 5 is also provided with a high-precision focusing device for precise focusing.

[0033] The clamping and feeding mechanism 6 includes a hollow shaft motor 601, a pneumatic caliper 602, a bracket 603 and a roller 604. The hollow shaft motor 601 is installed on the linear module 4. The pneumatic caliper 602 is installed on the head of the hollow shaft motor 601. The bracket 603 is installed on the tail of the hollow shaft motor 601. The roller 604 is installed on the bracket 603. The material to be processed is placed on the roller 604 at one end and clamped by the pneumatic caliper 602 on the hollow shaft motor 601 at the other end; the linear module 4 drives the clamping and feeding mechanism 6 to move, and the material can be transported to the bottom of the laser cutting head 5 for cutting. The rotation of the hollow shaft motor 601 can drive the material to rotate, thereby processing different surfaces of the pipe material. A round tube bracket 605 and an air clamp 606 are also installed on the marble base 2, and the number of the round tube bracket 605 and the air clamp 606 are both three; the round tube bracket 605 is used to hold the material so that the tube material is more stable during cutting; the air clamp 606 is used to clamp the tube material when the clamping and feeding mechanism 6 retreats; the hollow shaft motor 601, the roller 604, the round tube bracket 605, the air clamp 606 and the laser cutting head 5 are on an axis.

[0034] The frame body 1 is also provided with a closed cutting chamber 9, and the laser cutting head 5 is inserted into the cutting chamber 9 to avoid the diffusion of smoke and dust during processing; the cutting chamber 9 is provided with an observation port 901 and a dust extraction port 902, and the dust extraction port 902 is connected to a dust suction device for extracting the smoke and dust generated by the processing; the bottom of the cutting chamber 9 is provided with a material receiving drawer 10 for collecting processed products.

[0035] Furthermore, three material guide troughs 903 are provided in the cutting bin 9, and the material receiving drawer 10 is divided into three material receiving bins 11 by a baffle. The positions of the three laser cutting heads 5, the material guide troughs 903 and the material receiving bins 11 correspond to each other, and each material receiving bin 11 is used to collect the products cut by the corresponding laser cutting head; the products processed at the three workstations are collected separately, and when a device fails in the three laser cutting heads or the corresponding motion mechanisms, resulting in problems with the processed products, the problematic products will not be mixed into normal products.

[0036] Working principle: First, before leaving the factory, the three laser cutting heads 5 need to be focused separately; the adjusting screw 705 is rotated to make the slide 702 and the laser cutting heads 5 thereon move up and down until the laser power of the three laser cutting heads 5 at the workpiece being processed is consistent;

[0037] When cutting, the pipe is placed on the roller 604 on the bracket 603 and the hollow shaft motor 601, and the pipe passes through the round pipe bracket 605 and enters under the laser cutting head 5; then the pipe is clamped by the pneumatic caliper 602, the linear module 4 moves toward the laser cutting head 5, and the output component of the hollow shaft motor 601 rotates to drive the pipe to rotate, thereby cooperating with the laser cutting head 5 for cutting; when the material needs to move forward, the air clamp 606 clamps the pipe, the pneumatic caliper 602 releases the pipe, the linear module 4 drives the hollow shaft motor 601 to retreat, the pneumatic caliper 602 clamps the pipe, the air clamp 606 releases the pipe, and the linear module 4 moves forward to drive the pipe forward.

[0038] In summary, this technical solution adopts a gantry to support the laser cutting head, and uses an integrated marble as the base of the entire motion mechanism. At the same time, a variety of means such as a focusing device are used to ensure the stability and consistency of multi-head laser processing; it not only provides processing efficiency through multiple processing stations, but also maximizes the processing accuracy and consistency of processed products.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A three-head synchronous laser tube cutting machine, characterized in that: The invention comprises a frame body (1), wherein a marble base (2) is arranged on the frame body (1), a gantry (3) and a linear module (4) are arranged on the marble base (2), three laser cutting heads (5) are fixed on the gantry (3), and three clamping and feeding mechanisms (6) are arranged on the linear module.

2. A three-head synchronous laser tube cutting machine as claimed in claim 1, characterized in that: A laser placement position (101) is provided at the bottom of the frame body (1), and three laser generators (8) are provided in the laser placement position (101). The laser generators (8) are connected to the laser cutting head (5) via optical fibers.

3. A three-head synchronous laser tube cutting machine as claimed in claim 1, characterized in that: The invention comprises a focusing device (7), wherein the focusing device (7) comprises a base (701), a slide (702), a waist-shaped hole (703), a threaded hole (704) and an adjusting screw (705); the base (701) is mounted on a gantry (3); the slide (702) is movably mounted on the base (701); the base (701) is provided with a waist-shaped hole (703); the slide (702) is provided with a threaded hole (704); the waist-shaped hole (703) and the threaded hole (704) are fixed by bolts, thereby locking the base (701) and the slide (702); the adjusting screw (705) is movably mounted on the top of the base (701), and the bottom is threadedly connected to the slide (702); and the laser cutting head (5) is mounted on the slide (702).

4. A three-head synchronous laser tube cutting machine as claimed in claim 3, characterized in that: The base (701) is provided with a scale (706), and the slide (702) is provided with a pointer (707), and the pointer (707) is located at the scale (706).

5. The three-head synchronous laser tube cutting machine according to claim 1, characterized in that: The clamping and feeding mechanism (6) comprises a hollow shaft motor (601), a pneumatic caliper (602), a bracket (603) and a roller (604); the hollow shaft motor (601) is mounted on the linear module (4); the pneumatic caliper (602) is mounted on the head of the hollow shaft motor (601); the bracket (603) is mounted on the tail of the hollow shaft motor (601); and the roller (604) is mounted on the bracket (603).

6. A three-head synchronous laser tube cutting machine as claimed in claim 5, characterized in that: A round tube bracket (605) and an air clamp (606) are also installed on the marble base (2), and the number of the round tube bracket (605) and the number of the air clamp (606) are both three.

7. The three-head synchronous laser tube cutting machine according to claim 1, characterized in that: The frame body (1) is provided with a closed cutting chamber (9), the laser cutting head (5) extends into the cutting chamber (9), and the cutting chamber (9) is provided with an observation port (901) and a dust extraction port (902).

8. A three-head synchronous laser tube cutting machine as claimed in claim 7, characterized in that: A material receiving drawer (10) is provided at the bottom of the cutting bin (9).

9. A three-head synchronous laser tube cutting machine as claimed in claim 8, characterized in that: The cutting chamber (9) is provided with three material guide grooves (903), the material receiving drawer (10) is divided into three material receiving chambers (11) by a baffle, and the positions of the laser generator (8), the material guide grooves (903) and the material receiving chambers (11) correspond to each other.

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