Laser cutting equipment and laser cutting method

Abstract

The invention relates to the technical field of laser cutting, and discloses laser cutting equipment and a laser cutting method.The equipment comprises a rack, the rack is provided with a conveying assembly, the conveying assembly comprises a plurality of spiral roller conveying units arranged in parallel, the spiral roller conveying units convey workpieces through rotation, and a laser cutting assembly is arranged above the conveying assembly; the laser cutting assembly is connected with the rack through a moving assembly, and the moving assembly drives the laser cutting assembly to move above the conveying assembly. According to the scheme, conveying of the workpiece is achieved through the spiral roller conveying unit, in the conveying process, the spiral roller conveying unit rotates to drive conveying movement of the workpiece, and in the laser cutting process, the spiral surface keeps away from a laser cutting point through rotation of the spiral roller conveying unit; the cutting loss of the spiral roller conveying unit caused by the laser cutting assembly during workpiece cutting is relieved or prevented, the service life of the conveying assembly is prolonged, meanwhile, cutting reverse slag is prevented from splashing to the workpiece, and the material cutting quality is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laser cutting, in particular to a laser cutting device and a laser cutting method. BACKGROUND

[0002] A laser cutting device is a machine that uses a high-power laser beam to cut, engrave or mark materials. Laser cutting is widely used in manufacturing, automotive, aerospace, electronics, electrical appliances, handicrafts and other fields due to its precision, efficiency and high automation level. Laser cutting equipment has the advantages of high precision, high speed, strong flexibility and non-contact processing. Laser cutting equipment plays an important role in industrial automation and has wide market demand and application prospects. In the existing laser cutting device, the workpiece is supported by a tooth plate, and the tooth plate drives the workpiece to move. When the laser cuts the workpiece, it penetrates the workpiece and contacts the tooth plate below, damaging the tooth plate. Therefore, the tooth plate is worn out during transportation, and the tooth plate needs to be replaced after a period of use. Moreover, more waste is generated during the wear process, which is not conducive to cleaning.

[0003] Chinese patent CN202310017789.0 discloses an auxiliary device for machining automobile parts, which comprises a first mounting frame and a cutting unit. Two first mounting frames are connected by a cutting unit on the upper side. The slag on the side of the sword grid is removed by rotating the two screw rods, and then the loose gear with convex strips on the outer surface is controlled to roll on the sword grid. The loose gear is also moved up and down during rolling, so that the loose gear can extrude and rub the slag on the upper side of the sword grid, making the slag loose and easy to remove. In this scheme, the workpiece is supported by the sword grid (equivalent to the tooth plate), which needs to be improved.

[0004] The present application overcomes the shortcomings of the prior art and provides a laser cutting device and a laser cutting method, which replace the existing tooth plate conveying method and have a long service life. SUMMARY

[0005] The main purpose of the present application is to provide a laser cutting device, which comprises a rack, a conveying assembly arranged on the rack, a plurality of spiral roller conveying units arranged in parallel in the conveying assembly, a laser cutting assembly arranged above the conveying assembly, a moving assembly connecting the laser cutting assembly and the rack, and the moving assembly drives the laser cutting assembly to move above the conveying assembly.

[0006] Optionally, the spiral roller conveying unit comprises a first mounting frame and a plurality of spiral rollers, the spiral rollers are hinged to the first mounting frame, the spiral rollers are arranged in parallel, each spiral roller is connected to a single servo motor through a reducer, and the first mounting frame is provided with an inductor on one side.

[0007] Optionally, a limiting component is included, which is arranged on the frame and located between the spiral roller conveying units. The limiting component adjusts the limiting width according to the width of the workpiece to limit both sides of the workpiece.

[0008] Optionally, the limiting assembly includes a second mounting bracket, the second mounting bracket is provided with positive and negative screw rods, the positive and negative screw rods are arranged parallel to the spiral roller conveying unit, the middle of the positive and negative screw rods are fixedly connected to the support plate, and movable plates are respectively provided on both sides of the support plate, the movable plates are transmission-connected to the positive and negative screw rods, the movable plates are provided with limiting rollers, the limiting rollers are arranged perpendicular to the conveying surface of the conveying assembly, the positive and negative screw rods are transmission-connected to the power assembly, and a sensor is provided on one side of the second mounting bracket.

[0009] Optionally, the number of the limiting components is 2, and a plurality of the spiral roller conveying units are provided between the two limiting components.

[0010] Optionally, the moving assembly includes a support beam, both ends of the support beam are connected to a motor via a gear rack, and the motor drives the support beam to move along an x-direction, which is parallel to a conveying direction of the conveying assembly; The laser cutting assembly is connected to the motor through a gear rack, and the motor drives the laser cutting assembly to move along the y direction on the support beam.

[0011] Optionally, the laser cutting assembly includes a laser head and a housing, the housing is connected to the motor through a gear rack, the laser head and the housing are connected through a motor and a screw, and the motor drives the laser head to move along the z direction.

[0012] Optionally, a waste trolley is provided under the frame to collect waste.

[0013] Optionally, the frame is provided with a dust suction port, which is communicated with the space below the conveying component. The dust suction port is externally connected to a negative pressure device to absorb debris from the space below the conveying component.

[0014] The present invention also provides a laser cutting method, which is implemented by the above-mentioned laser cutting equipment and includes the following steps: S100, obtaining the data of the graphics to be cut, and planning the cutting path according to the data of the graphics to be cut; S200, planning the rotation angle and rotation direction of a single spiral roller in the spiral roller conveying unit according to the cutting path; S300, the spiral roller conveying unit conveys the workpiece to a predetermined position; S400: The laser cutting assembly cuts the workpiece according to the cutting path, and the spiral roller rotates a predetermined angle according to the cutting position of the cutting point to avoid the cutting point.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The laser cutting equipment provided by the present invention realizes the conveying of the workpiece through a spiral roller conveying unit. During the conveying process, the spiral roller conveying unit rotates to drive the conveying movement of the workpiece. During the laser cutting process, the spiral roller conveying unit rotates to make the spiral surface avoid the laser cutting point, thereby reducing or preventing the laser cutting component from causing cutting loss to the spiral roller conveying unit when cutting the workpiece, increasing the service life of the conveying component, and at the same time avoiding the splashing of the slag generated by the cutting onto the workpiece, thereby improving the cutting quality of the workpiece material. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] One or more embodiments are exemplarily illustrated by corresponding drawings, which do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0017] Figure 1 This is a schematic diagram of an embodiment of the laser cutting equipment of the present invention.

[0018] Figure 2 This is a top view of an embodiment of the laser cutting equipment of the present invention.

[0019] Figure 3 This is a front view of an embodiment of the laser cutting equipment of the present invention.

[0020] Figure 4 This is a right view of an embodiment of the laser cutting equipment of the present invention.

[0021] Figure 5 This is a schematic diagram of the spiral roller conveying unit of the laser cutting equipment embodiment of the present invention.

[0022] Figure 6 This is a top view of the spiral roller conveying unit of the laser cutting equipment embodiment of the present invention.

[0023] Figure 7 This is a side view of the spiral roller conveying unit of the laser cutting equipment embodiment of the present invention.

[0024] Figure 8 This is a schematic diagram of the limiting component of the laser cutting equipment embodiment of the present invention.

[0025] Figure 9 This is a top view of the limiting component of the laser cutting equipment embodiment of the present invention.

[0026] Figure 10This is a side view of the limiting component of the laser cutting equipment embodiment of the present invention.

[0027] Reference numerals: 100-frame; 110-dust suction port; 200-conveyor assembly; 210-spiral roller conveyor unit; 211-spiral surface; 220-first mounting frame; 221-mounting vertical plate; 222-support column; 230-spiral roller; 231-roller body; 240-servo motor; 250-reducer; 300-laser cutting assembly; 400-moving assembly; 410-support beam; 420-motor; 500-sensor; 600-limiting assembly; 610-second mounting frame; 611-bearing seat; 620-positive and negative screw rods; 630-support plate; 640-moving plate; 641-limiting roller; 650-power assembly; 700-waste trolley; 710-handle; 720-small wheel. DETAILED DESCRIPTION

[0028] To facilitate understanding of the present invention, the present invention is described in more detail below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it may be directly attached to the other element, or one or more intervening elements may be present. When an element is described as being "connected to" another element, it may be directly connected to the other element, or one or more intervening elements may be present. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and similar expressions used in this specification are for illustrative purposes only. In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or implicitly specifying the number of technical features indicated. Therefore, unless otherwise specified, features specified as "first" or "second" may explicitly or implicitly include one or more of such features; "plurality" means two or more. The term "comprising" and any variations thereof are intended to be non-exclusive, and one or more other features, integers, steps, operations, units, components, and / or combinations thereof may be present or added.

[0029] In addition, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or internal communication between two components. All technical and scientific terms used in this specification have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs. The terms used in the description of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0030] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0031] like Figure 1-10 FIG. 1 is a schematic diagram of an embodiment of the laser cutting equipment provided by the present invention.

[0032] Please refer to Figure 1-10 This embodiment is used to achieve laser cutting of workpiece plates, and conveys the workpiece plates by supporting them with a spiral surface and rotating to replace the toothed plate support. This embodiment includes a frame 100, which is equipped with a conveying assembly 200. The conveying assembly 200 includes multiple parallel spiral roller conveying units 210. The spiral roller conveying units 210 convey the workpiece by rotating. A laser cutting assembly 300 is installed above the conveying assembly 200. The laser cutting assembly 300 is connected to the frame 100 via a moving assembly 400, which drives the laser cutting assembly 300 to move above the conveying assembly 200.

[0033] like Figure 1-4 As shown, in this embodiment, the workpiece is conveyed by a spiral roller conveyor unit 210. The spiral roller conveyor unit 210 supports the workpiece through a spiral surface 211. Due to the structural characteristics of the spiral surface 211, multiple interval structures are formed. The interval positions can be alternated by rotating the spiral surface 211. Therefore, the cutting path of the laser cutting assembly 300 can be combined with the rotation of the spiral surface 211 to make the interval correspond to the cutting point of the laser cutting assembly 300. The spiral roller conveyor unit 210 and the laser cutting assembly 300 are linked to prevent the laser cutting assembly 300 from cutting the spiral surface 211, reducing the wear of the spiral roller conveyor unit 210 and preventing the slag generated by the cutting from splashing onto the workpiece, thereby improving the cutting quality of the workpiece material. The laser cutting assembly 300 is driven by the moving assembly 400 to move above the conveying assembly 200 (i.e., above the workpiece) and laser cut the workpiece from above.

[0034] In one embodiment, if Figure 5-7 As shown, the spiral roller conveying unit 210 includes a first mounting frame 220 and multiple spiral rollers 230. The spiral roller 230 is hinged to the first mounting frame 220. The multiple spiral rollers 230 are arranged in parallel. Each spiral roller 230 is connected to a single servo motor 240 through a reducer 250. An inductor 500 is provided on one side of the first mounting frame 220.

[0035] Specifically, mounting plates 221 are provided at both ends of the first mounting frame 220. The spiral roller 230 consists of a spiral surface 211 and a roller body 231. The two ends of the roller body 231 are respectively hinged to the mounting plates 221. One end of the roller body 231 is connected to the servo motor 240 through a reducer 250, and the servo motor 240 drives the roller body 231 to rotate. The rotation of each spiral roller 230 is controlled by a separate servo motor 240, making the control of the spiral roller conveying unit 210 more precise and flexible. A support column 222 is provided below the first mounting frame 220, and the first mounting frame 220 is connected to the frame 100 through the support column 222. The sensor 500 is used to detect the position of the workpiece. The sensor 500 feeds back the workpiece position information to the spiral roller conveying unit 210 and the laser cutting assembly 300 to achieve feedback adjustment.

[0036] There are multiple spiral roller conveyor units 210, each of which also includes multiple spiral rollers 230. In this embodiment, four spiral rollers 230 are used as one spiral roller conveyor unit 210, and eight spiral roller conveyor units 210 form the complete conveyor assembly 200. The spiral roller conveyor units 210 can be adjusted according to the length of the conveying section of the conveyor assembly 200. This modular design facilitates the combination and adjustment of the conveying section and the replacement of the spiral roller conveyor units 210. It also provides more precise control of the spiral rollers 230 and facilitates troubleshooting.

[0037] In one embodiment, a stopper assembly 600 is further included. The stopper assembly 600 is disposed on the frame 100 and is located between the spiral roller conveying units 210. The stopper assembly 600 adjusts the stopper width according to the width of the workpiece to limit the workpiece on both sides. The stopper assembly 600 is used to prevent the workpiece from deviating to the sides during conveyance.

[0038] Specifically, if Figure 8-10 As shown, the limiting assembly 600 includes a second mounting frame 610, and the second mounting frame 610 is provided with a positive and negative screw rod 620, and the positive and negative screw rod 620 is arranged parallel to the spiral roller conveying unit 210. The middle part of the positive and negative screw rod is fixedly connected to the support plate 630, and a movable plate 640 is provided on both sides of the support plate 630. The movable plate 640 is transmission-connected to the positive and negative screw rod 620, and the movable plate 640 is provided with a limiting roller 641. The limiting roller 641 is arranged perpendicular to the conveying surface of the conveying assembly 200, and the positive and negative screw rod 620 is transmission-connected to the power assembly 650. A sensor 500 is provided on one side of the second mounting frame 610.

[0039] The second mounting frame 610 is provided with bearing seats 611 at both ends to support the positive and negative threaded rods 620. The positive and negative threaded rods 620 are centered on the support plate 630, and the threads on both sides are in opposite directions. The movable plate 640 is matched with the threads of the positive and negative threaded rods 620. When the positive and negative threaded rods 620 rotate, the movable blocks 640 on both sides move closer or farther away from each other synchronously, thereby driving the limiting rollers 641 to move closer or farther away synchronously to adjust the limiting width. The limiting rollers 641 are hinged to the movable plate 640, and the workpiece and the limiting rollers 641 are in rolling contact, which reduces the resistance to movement of the workpiece and reduces damage to the workpiece during limiting.

[0040] Support plate 630 supports the workpiece from below. Support plate 630 and the conveying surface of conveyor assembly 200 are coplanar. When the workpiece moves through stop assembly 600, support plate 630 supports the center of the workpiece, preventing it from sagging. Screws 620 are driven by power assembly 650, which can be a motor or a handwheel.

[0041] Furthermore, there are two limit assemblies 600, with multiple spiral roller conveyor units 210 positioned between the two limit assemblies 600. The two limit assemblies 600 limit the front and rear sides of the workpiece, respectively, providing a better limit and guide effect. In this embodiment, four spiral roller conveyor units 210 are spaced between the two limit assemblies 600. The spiral roller conveyor units 210, the limit assemblies 600, and the frame 100 are detachably connected, allowing for free combination and adjustment based on the size of the workpiece being conveyed.

[0042] In one embodiment, the moving assembly 400 includes a support beam 410, the ends of which are connected to a motor 420 via a gear rack (not shown). The motor 420 drives the support beam 410 to move in the x-direction, which is parallel to the conveying direction of the conveying assembly 200. The laser cutting assembly 300 is connected to the motor via a gear rack (not shown). The motor drives the laser cutting assembly 300 to move in the y-direction on the support beam 410. The support beam 410 is arranged parallel to the y-direction. Furthermore, the laser cutting assembly 300 includes a laser head and a housing. The housing is connected to the motor via a gear rack. The laser head and the housing are connected via a motor and a lead screw. The motor drives the laser head to move in the z-direction. The moving assembly 400 enables the laser cutting assembly 300 to move in the x, y, and z directions.

[0043] The transmission structure of the gear rack and the transmission structure of the screw rod moving up and down are conventional technical structures. The specific contents are recorded in the patents No. 2024231128890 and No. 2024220566020 previously applied for by the applicant, and will not be repeated here.

[0044] In an embodiment, a waste trolley 700 is arranged below the rack 100 to collect the waste. A plurality of waste trolleys 700 are arranged below the conveying assembly 200 to collect the waste generated after the laser cutting assembly 300 cuts the workpiece. The waste trolley 700 is moved by pulling the handle 710 and the small wheels 720. When the waste trolley 700 is full of waste, the waste trolley 700 is pulled out from below the rack 100 by the handle 710 for waste transfer.

[0045] In an embodiment, the rack 100 is provided with a dust suction port 110 which is in communication with the space below the conveying assembly 200. A negative pressure device is connected to the dust suction port 110 to suck the debris below the conveying assembly 200, further reducing the waste and debris splashing onto the workpiece, and improving the cutting quality of the workpiece. The negative pressure device can be a fan.

[0046] The application also provides a laser cutting method. The method is implemented by the laser cutting device described above and includes the following steps: S100, obtaining the cutting pattern data, and planning the cutting path according to the cutting pattern data.

[0047] The cutting pattern data can be converted into electronic data after being drawn by computer software and input into the control assembly. The control assembly is used to control the laser cutting assembly and the spiral roller conveying unit.

[0048] The control assembly converts the received electronic data of the pattern into cutting path data of the laser cutting assembly and outputs control commands to control the laser cutting assembly to perform laser cutting.

[0049] S200, planning the rotation angle and rotation direction of each spiral roller in the spiral roller conveying unit according to the cutting path.

[0050] The control assembly converts the cutting path planning data into control instructions to control the spiral roller conveying unit. Specifically, each spiral roller in the spiral roller conveying unit is controlled individually to control the rotation angle and rotation direction of the single spiral roller.

[0051] S300, the spiral roller conveying unit conveys the workpiece to a predetermined position.

[0052] The control assembly outputs control instructions to control the rotation direction and rotation speed of the spiral roller conveying unit to convey the workpiece to the designated position, and adjusts the position of the workpiece in cooperation with the laser cutting assembly.

[0053] S400, the laser cutting assembly cuts the workpiece according to the cutting path, and the spiral roller rotates a predetermined angle to avoid the cutting point according to the cutting position of the cutting point.

[0054] The control component receives the workpiece position data collected by the sensor, combines it with the planned cutting path, and then outputs a control instruction to control the spiral roller to rotate according to the position of the cutting point to avoid the cutting point, thereby realizing the linkage control of the two.

[0055] To sum up, the embodiments provided by the present invention realize the conveyance of workpieces through a spiral roller conveying unit. During the conveying process, the spiral roller conveying unit rotates to drive the conveying movement of the workpiece. During the laser cutting process, the spiral roller conveying unit rotates to make the spiral surface avoid the laser cutting point, thereby reducing or preventing the laser cutting component from causing cutting loss to the spiral roller conveying unit when cutting the workpiece, and improving the service life of the conveying component.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Under the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes in different aspects of the present invention as described above. For the sake of simplicity, they are not provided in detail. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A laser cutting device, characterized in that: It includes a frame, which is provided with a conveying assembly, and the conveying assembly includes a plurality of parallel spiral roller conveying units, and the spiral roller conveying units convey the workpiece by rotation. A laser cutting assembly is provided above the conveying assembly, and the laser cutting assembly is connected to the frame through a moving assembly, and the moving assembly drives the laser cutting assembly to move above the conveying assembly.

2. The laser cutting equipment according to claim 1, characterized in that: The spiral roller conveying unit includes a first mounting frame and multiple spiral rollers. The spiral rollers are hinged to the first mounting frame. The multiple spiral rollers are arranged in parallel. Each spiral roller is connected to a single servo motor through a reducer. A sensor is provided on one side of the first mounting frame.

3. The laser cutting equipment according to claim 1, characterized in that: It includes a limiting component, which is arranged on the frame and located between the spiral roller conveying units. The limiting component adjusts the limiting width according to the width of the workpiece to limit both sides of the workpiece.

4. The laser cutting equipment according to claim 3, characterized in that: The limiting assembly includes a second mounting bracket, the second mounting bracket is provided with positive and negative screw rods, the positive and negative screw rods are arranged parallel to the spiral roller conveying unit, the middle of the positive and negative screw rods are fixedly connected to the support plate, and movable plates are respectively provided on both sides of the support plate, the movable plates are transmission connected to the positive and negative screw rods, the movable plates are provided with limiting rollers, the limiting rollers are arranged perpendicular to the conveying surface of the conveying assembly, the positive and negative screw rods are transmission connected to the power assembly, and a sensor is provided on one side of the second mounting bracket.

5. The laser cutting equipment according to claim 3, characterized in that: The number of the limiting components is 2, and a plurality of the spiral roller conveying units are arranged between the two limiting components.

6. The laser cutting equipment according to claim 1, characterized in that: The moving assembly includes a support beam, both ends of which are connected to a motor through a gear rack, and the motor drives the support beam to move along the x-direction, which is parallel to the conveying direction of the conveying assembly; The laser cutting assembly is connected to the motor through a gear rack, and the motor drives the laser cutting assembly to move along the y direction on the support beam.

7. The laser cutting equipment according to claim 6, characterized in that: The laser cutting assembly includes a laser head and a housing. The housing is connected to the motor through a gear rack. The laser head and the housing are connected through a motor and a lead screw. The motor drives the laser head to move along the z direction.

8. The laser cutting equipment according to claim 1, characterized in that: A waste trolley is provided under the frame to collect waste.

9. The laser cutting equipment according to claim 1, characterized in that: The frame is provided with a dust suction port, which is communicated with the space below the conveying component. The dust suction port is externally connected to a negative pressure device to suck debris from the space below the conveying component.

10. A laser cutting method, characterized in that: The method is implemented by the laser cutting device according to any one of claims 1 to 9, comprising the following steps: S100, obtaining the data of the graphics to be cut, and planning the cutting path according to the data of the graphics to be cut; S200, planning the rotation angle and rotation direction of a single spiral roller in the spiral roller conveying unit according to the cutting path; S300, the spiral roller conveying unit conveys the workpiece to a predetermined position; S400: The laser cutting assembly cuts the workpiece according to the cutting path, and the spiral roller rotates a predetermined angle according to the cutting position of the cutting point to avoid the cutting point.

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