A control method for precise dust extraction of a laser cutting machine

Abstract

The present application relates to a kind of laser cutting machine precision dust extraction control method, laser cutting machine precision dust extraction control method includes early preparation: debugging laser cutting machine;Laser cutting machine includes dust extraction machine tool, laser cutting head and host computer;Host computer is used to control laser cutting head cutting;Laser cutting head is set in the upper of dust extraction machine tool;Dust extraction machine tool is equipped with dust accumulation groove;Dust accumulation groove is divided into multiple dust extraction zones;Each dust extraction zone is equipped with dust extraction component respectively;Dust extraction component includes dust extraction pipe, gate and servo motor;Start cutting, host computer records the XY coordinate information of laser cutting head in real time, and according to the XY coordinate information of laser cutting head, judge which dust extraction zone laser cutting head is located;And host computer controls the dust extraction component of the dust extraction zone where laser cutting head is located to carry out dust extraction;Other dust extraction zone dust extraction component stops dust extraction or the dust extraction component of adjacent dust extraction zone carries out auxiliary dust extraction;To achieve the effect of efficient dust extraction.

Description

Technical Field

[0001] This invention patent relates to a control method for precise dust extraction in a laser cutting machine. Background Technology

[0002] A laser cutting machine is a device that uses a laser beam emitted from a laser source to reach the melting or boiling point of the workpiece. High-pressure gas, coaxial with the laser beam, blows away the molten or vaporized metal, thus achieving the purpose of material cutting. Laser cutting uses an invisible laser beam instead of a traditional mechanical blade, offering advantages such as high precision, fast cutting speed, no limitation on cutting patterns, automatic layout to save materials, smooth cuts, and low processing costs. It is gradually improving upon or replacing traditional metal cutting processes.

[0003] Although laser cutting machines have a wide range of applications, they generate a large amount of waste gas and dust during operation. This waste gas and dust can cause harm to human health, making the recovery of these pollutants particularly important. To address these issues, dust extraction mechanisms have been designed into laser cutting machines to effectively collect waste gas and dust, preventing environmental pollution and reducing occupational health risks.

[0004] During the dust extraction process, since the area where the laser cutting head produces debris during cutting cannot be determined, all dust extraction components need to be turned on to ensure that the debris produced during cutting can be extracted. However, this method of dust extraction with all components turned on results in poor dust extraction effect due to the large dust extraction area, and the dust extraction cost is also high because all dust extraction components need to be turned on. Summary of the Invention

[0005] The purpose of this invention is to provide a precise dust extraction control method for laser cutting machines. All dust extraction components do not need to be fully opened for dust extraction. Dust extraction can be performed in real time and precisely according to the cutting position, which is more economical and efficient.

[0006] The technical solution to achieve the purpose of this invention patent is: the precise dust extraction control method for laser cutting machines of this invention includes:

[0007] S1. Preliminary Preparation: Debugging the laser cutting machine; the laser cutting machine includes a dust extraction machine tool, a laser cutting head, a host computer, and a dust extraction device; the host computer is used to control the laser cutting head to cut; the laser cutting head is located above the dust extraction machine tool; the dust extraction machine tool is equipped with a dust collection tank; the dust collection tank is divided into multiple dust extraction zones; each dust extraction zone is equipped with one or more dust extraction components for extracting dust from that zone; the dust extraction component includes a dust extraction port, a gate plate that is rotatably installed at the dust extraction port, and a servo motor that is controlled by the host computer and drives the gate plate to open and close the dust extraction port; the dust extraction device is connected to each dust extraction port.

[0008] S2: Place the object to be cut on the dust extraction machine tool in preparation for cutting;

[0009] S3: The laser cutting head starts cutting. The host computer records the XY coordinate information of the laser cutting head in real time and determines which dust extraction zone the laser cutting head is located in based on the XY coordinate information. The host computer controls the dust extraction component in the dust extraction zone where the laser cutting head is located to fully open the gate. The gates of the dust extraction components in other dust extraction zones are closed, or the gates of the dust extraction components in adjacent dust extraction zones are partially or fully opened. When any gate is open, the dust extraction device starts to extract dust.

[0010] S4: Dust extraction is completed simultaneously with laser cutting.

[0011] Furthermore, in step S1, when debugging the laser cutting machine, the following steps are performed: the model of the dust extraction machine tool is input into the host computer, the host computer retrieves the size of the dust collection tank and the number of dust extraction pipes on the corresponding dust extraction machine tool according to the input dust extraction machine tool model, and divides the dust collection tank into multiple adjacent dust extraction zones according to the size of the dust collection tank and the number of dust extraction pipes.

[0012] Furthermore, the closer the cutting point of the laser cutting head is to the dust extraction pipe opening in the adjacent dust extraction zone, the larger the opening angle of the gate.

[0013] Furthermore, the dust collection tank is provided with two rows of adjacent dust extraction zones arranged along the X direction. Each dust extraction zone group has multiple adjacent dust extraction zones with a length of Ly and a width of Lx evenly arranged. The number of dust extraction zones in each dust extraction zone group is the same in the Y direction and they correspond one-to-one in the X direction.

[0014] The boundary between a single dust extraction zone and its adjacent dust extraction zone on the left is the adjacent line in the Y direction on the left; the boundary between a single dust extraction zone and its adjacent dust extraction zone on the right is the adjacent line in the Y direction on the right; and the boundary between a single dust extraction zone and its adjacent dust extraction zone in the X direction is the adjacent line in the X direction.

[0015] The formula for calculating the gate opening and closing angle of the dust extraction components in the adjacent dust extraction zones in the X direction of the dust extraction zone where the upper computer controls the cutting point is as follows:

[0016] L1 / Lx*90°; where L1 is the distance in the X direction between the cutting point and the dust extraction pipe opening in the dust extraction zone where the cutting point is located;

[0017] The formula for calculating the gate opening and closing angle of the dust extraction component in the adjacent dust extraction zone on the right side of the dust extraction zone where the upper computer controls the cutting point is located is as follows:

[0018] L2 / L y *90°; where L2 is the distance in the Y direction between the cutting point and the adjacent line in the Y direction on the left.

[0019] The formula for calculating the gate opening and closing angle of the dust extraction component in the adjacent dust extraction zone on the left side in the Y direction, where the upper computer controls the cutting point, is as follows:

[0020] L3 / L y *90°; where L3 is the distance in the Y direction between the cutting point and the adjacent line in the Y direction on the right.

[0021] The present invention has positive effects: (1) The present invention uses the host computer to detect the XY coordinates of the laser cutting head in real time and determine which dust extraction zone the laser cutting head is in. The host computer can control the dust extraction components in the dust extraction zone where the laser cutting head is located to perform dust extraction. At the same time, the dust extraction components in other dust extraction zones are turned off or the dust extraction components in adjacent dust extraction zones perform auxiliary dust extraction. The dust extraction components can achieve better precision dust extraction according to the position of the laser cutting head, which is efficient and effective.

[0022] (2) The host computer in this invention makes precise division of the dust collection area in the dust collection tank, so that each dust collection component can run in its own dust collection area and the dust collection component can fully meet the dust collection needs in a single dust collection area.

[0023] (3) The host computer in this invention can continuously record the XY coordinates of the laser cutting head. When the laser cutting head moves, the host computer can also record the XY coordinates of the laser cutting head in real time. At the same time, it controls the dust extraction component in the dust collection tank to change the opening and closing size according to the change of the XY coordinates of the laser cutting head, so that the dust extraction component can extract dust more effectively in real time, which is efficient and fast.

[0024] (4) The host computer in this invention can control the opening and closing size of the gate of the dust extraction component in the adjacent dust extraction zone on the left and the adjacent dust extraction zone on the right according to the distance from the cutting point of the laser cutting head to the adjacent line in the Y direction on the right and the adjacent line in the Y direction on the left. That is, the closer the cutting point is to an adjacent dust extraction zone, the larger the gate opening of the dust extraction component in that adjacent dust extraction zone will be, and the farther the cutting point is from an adjacent dust extraction zone, the smaller the gate opening of the dust extraction component in that adjacent dust extraction zone will be. This makes the auxiliary dust extraction of the adjacent dust extraction zones around the dust extraction zone where the laser cutting head is located more economical and effective. Attached Figure Description

[0025] To make the content of this invention patent easier to understand, the invention patent will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein...

[0026] Figure 1 This is a schematic diagram of the dust extraction machine tool in this invention;

[0027] Figure 2 This is a schematic diagram of the dust extraction component in this invention;

[0028] Figure 3 This is a schematic diagram showing the division of the dust extraction zone within the dust extraction tank in this invention;

[0029] Figure 4 This is a schematic diagram illustrating the length specification in this invention;

[0030] Figure 5 This is a schematic diagram illustrating the length specification in an example of the present invention. Detailed Implementation

[0031] See Figures 1 to 5 The precision dust extraction control method for laser cutting machines according to this invention patent includes:

[0032] S1. Preliminary preparation: Debugging the laser cutting machine; The laser cutting machine includes a dust extraction machine tool 1, a laser cutting head, a host computer, and a dust extraction device for dust extraction; The host computer is used to control the laser cutting head to cut; The laser cutting head is set above the dust extraction machine tool 1; The dust extraction machine tool 1 is provided with a dust collection tank 2; The dust collection tank 2 is divided into multiple dust extraction zones; Each dust extraction zone is provided with one or more dust extraction components 3 for dust extraction in that zone; The dust extraction component 3 includes a dust extraction port 31, a gate 32 rotatably disposed on the dust extraction port 31, and a servo motor 33 controlled by the host computer and driving the gate 32 to control the opening and closing of the dust extraction port 31; The dust extraction device is connected to each dust extraction port 31.

[0033] S2: Place the object to be cut on the dust extraction machine tool 1 in preparation for cutting;

[0034] S3: The laser cutting head starts cutting. The host computer records the XY coordinate information of the laser cutting head in real time and determines which dust extraction zone the laser cutting head is located in based on the XY coordinate information. The host computer controls the dust extraction component 3 in the dust extraction zone where the laser cutting head is located to fully open the gate 32. The gate 32 of the dust extraction component 3 in other dust extraction zones is closed, or the gate 32 of the dust extraction component 3 in adjacent dust extraction zones is partially or fully opened. When any gate 32 is open, the dust extraction device starts to extract dust.

[0035] S4: Dust extraction is completed simultaneously with laser cutting.

[0036] In step S1, when debugging the laser cutting machine, the following steps are performed: the model of the dust extraction machine tool 1 is entered on the host computer, and the host computer retrieves the size of the dust collection tank 2 and the number of dust extraction pipe ports 31 on the corresponding dust extraction machine tool 1 according to the entered model of the dust extraction machine tool 1, and divides the dust collection tank 2 into multiple adjacent dust extraction zones according to the size of the dust collection tank 2 and the number of dust extraction pipe ports 31.

[0037] The closer the cutting point of the laser cutting head is to the dust extraction pipe opening 31 in the adjacent dust extraction zone, the larger the opening angle of the gate 32.

[0038] The dust collection tank 2 is provided with two rows of adjacent dust extraction zones arranged along the X direction. Each dust extraction zone group has multiple adjacent dust extraction zones with a length of Ly and a width of Lx evenly arranged. The number of dust extraction zones in each dust extraction zone group is the same in the Y direction and they correspond one-to-one in the X direction.

[0039] The boundary between a single dust extraction zone and its adjacent dust extraction zone on the left is the adjacent line in the Y direction on the left; the boundary between a single dust extraction zone and its adjacent dust extraction zone on the right is the adjacent line in the Y direction on the right; and the boundary between a single dust extraction zone and its adjacent dust extraction zone in the X direction is the adjacent line in the X direction.

[0040] The formula for calculating the opening and closing angle of the gate 32 of the dust extraction component 3 in the adjacent dust extraction zone in the X direction of the dust extraction zone where the upper computer controls the cutting point is as follows:

[0041] L1 / Lx*90°; where L1 is the distance in the X direction between the cutting point and the dust extraction pipe opening 31 in the dust extraction zone where the cutting point is located;

[0042] The formula for calculating the opening and closing angle of the gate 32 of the dust extraction component 3 in the adjacent dust extraction zone on the right side in the Y direction, where the upper computer controls the cutting point, is as follows:

[0043] L2 / L y *90°; where L2 is the distance in the Y direction between the cutting point and the adjacent line in the Y direction on the left.

[0044] The formula for calculating the opening and closing angle of the gate 32 of the dust extraction component 3 in the adjacent dust extraction zone on the left side in the Y direction, where the upper computer controls the cutting point, is as follows:

[0045] L3 / L y *90°; where L3 is the distance in the Y direction between the cutting point and the adjacent line in the Y direction on the right.

[0046] During laser cutting, the dust extraction component 3 corresponding to the dust extraction zone directly opposite the laser cutting head is driven by the servo motor 33 to rotate the gate 32, causing the dust extraction component 3 to fully open and perform dust extraction. The opening angle of the gate 32 of the dust extraction component 3 in the dust extraction zone adjacent to the left side of the dust extraction zone where the cutting point is located is larger as the distance from the cutting point to the adjacent line in the Y direction on the left is closer. The opening angle of the gate 32 of the dust extraction component 3 in the dust extraction zone adjacent to the right side of the dust extraction zone where the cutting point is located is larger as the distance from the cutting point to the adjacent line in the Y direction on the right is closer. The opening angle of the gate 32 of the dust extraction component 3 in the dust extraction zone adjacent to the dust extraction zone in the X direction is larger as the distance from the cutting point to the adjacent line in the X direction is closer.

[0047] The dust extraction components 3 in the dust extraction zone can be selected to be one or more in a single dust extraction zone, depending on the dust extraction needs, so as to adapt to different dust extraction intensities.

[0048] The dust extraction machine tool 1 is provided with at least one set of dust extraction pipes fixedly installed on the side wall of the bed of the dust extraction machine tool 1 and arranged along the cutting direction of the laser cutting head. The dust extraction component 3 is installed on the dust extraction pipe; the servo motor 33 is installed on the outer wall of the dust extraction pipe opening 31.

[0049] For example:

[0050] If the cutting point O1 is in region A1, the dust extraction component 3 corresponding to region A1 is fully open. The opening and closing size of the dust extraction component 3 corresponding to region B1 is determined by the distance from point O1 to Y1. The opening and closing size of the dust extraction component 3 corresponding to area A2 is determined by the distance from point O1 to X12, i.e., opening and closing Y1-Y. 01 / Y1*90 0 The dust extraction components 3 in other areas are closed; X in this example 01 Y1 is the distance from the cutting point O1 to the adjacent line in the X direction; Y1 is the length of region A1 in the Y direction; Y 01 L3 is the distance from the cutting point O1 to the adjacent line in the Y direction on the right. For Lx, Let L1, Y1-Y 01 Let L2 be the base and Y1 be the base. y .

[0051] If the cutting point O2 is in region A2, the dust extraction component 3 corresponding to A2 is fully open. The opening and closing size of the dust extraction component 3 corresponding to region B2 is determined by the distance from point O2 to Y2. The opening and closing size of the dust extraction component 3 corresponding to area A3 is determined by the distance from point O2 to X23, i.e., opening and closing Y2-Y. 02 / Y2*90 0 The opening and closing size of the dust extraction component 3 corresponding to area A1 is Y. 02 / Y2*90 0 In other areas, the dust extraction component 3 is closed, and in this example, X... 01 Y1 is the distance from the cutting point O1 to the adjacent line in the X direction; Y1 is the length of region A1 in the Y direction. For Lx, For L1, Y2-Y 02 For L2, Y 01 L3 is the distance from the cutting point O1 to the adjacent line in the Y direction on the right; L2 is the distance from the cutting point O1 to the adjacent line on the right. y .

[0052] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this invention. It should be understood that the above descriptions are merely specific embodiments of this invention and are not intended to limit this invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the protection scope of this invention.

Claims

1. A method for controlling precise dust extraction in a laser cutting machine, characterized in that: The aforementioned method for controlling precise dust extraction in laser cutting machines includes: S1. Preliminary preparation: Debugging the laser cutting machine; The laser cutting machine includes a dust extraction machine tool (1), a laser cutting head, a host computer, and a dust extraction device for dust extraction; The host computer is used to control the laser cutting head to cut; The laser cutting head is set above the dust extraction machine tool (1); The dust extraction machine tool (1) is provided with a dust collection tank (2); The dust collection tank (2) is divided into multiple dust extraction zones; Each dust extraction zone is provided with one or more dust extraction components (3) for dust extraction of the dust extraction zone; The dust extraction component (3) includes a dust extraction port (31), a gate (32) rotatably set in the dust extraction port (31), and a servo motor (33) controlled by the host computer and driving the gate (32) to open and close the dust extraction port (31); The dust extraction device is connected to each dust extraction port (31); S2: Place the object to be cut on the dust extraction machine (1) in preparation for cutting; S3: The laser cutting head starts cutting. The host computer records the XY coordinate information of the laser cutting head in real time and determines which dust extraction zone the laser cutting head is located in based on the XY coordinate information of the laser cutting head. The host computer controls the dust extraction component (3) of the dust extraction zone where the laser cutting head is located to fully open the gate (32). The gate (32) of the dust extraction component (3) of other dust extraction zones is closed or the gate (32) of the dust extraction component (3) of the adjacent dust extraction zone is partially or fully opened. When any gate (32) is opened, the dust extraction device starts to extract dust. S4: Dust extraction is completed simultaneously with laser cutting; The dust collection tank (2) is provided with two rows of adjacent dust extraction zones arranged along the X direction. Each dust extraction zone group has multiple adjacent dust extraction zones with a length of Ly and a width of Lx. The number of dust extraction zones in each dust extraction zone group is the same in the Y direction and they correspond one-to-one in the X direction. The boundary between a single dust extraction zone and its adjacent dust extraction zone on the left is the adjacent line in the Y direction on the left; the boundary between a single dust extraction zone and its adjacent dust extraction zone on the right is the adjacent line in the Y direction on the right; and the boundary between a single dust extraction zone and its adjacent dust extraction zone in the X direction is the adjacent line in the X direction. The formula for calculating the opening and closing angle of the gate (32) of the dust extraction component (3) in the adjacent dust extraction zone in the X direction of the dust extraction zone where the upper computer controls the cutting point is as follows: L1 / Lx*90°; where L1 is the distance in the X direction between the cutting point and the dust extraction pipe opening (31) in the dust extraction zone where the cutting point is located; The formula for calculating the opening and closing angle of the gate (32) of the dust extraction component (3) in the adjacent dust extraction zone on the right side in the Y direction, where the upper computer controls the cutting point, is as follows: L2 / L y *90°; where L2 is the distance in the Y direction between the cutting point and the adjacent line in the Y direction on the left. The formula for calculating the opening and closing angle of the gate (32) of the dust extraction component (3) in the adjacent dust extraction zone on the left side in the Y direction, where the upper computer controls the cutting point, is as follows: L3 / L y *90°; where L3 is the distance in the Y direction between the cutting point and the adjacent line in the Y direction on the right.

2. The method for controlling precise dust extraction in a laser cutting machine according to claim 1, characterized in that: In step S1, when debugging the laser cutting machine, the following steps are performed: the model of the dust extraction machine tool (1) is input into the host computer, the host computer retrieves the size of the dust collection groove (2) and the number of dust extraction pipes (31) on the corresponding dust extraction machine tool (1) according to the input dust extraction machine tool (1) model, and divides the dust collection groove (2) into multiple adjacent dust extraction areas according to the size of the dust collection groove (2) and the number of dust extraction pipes (31).

3. The method for controlling precise dust extraction in a laser cutting machine according to claim 1, characterized in that: The closer the cutting point of the laser cutting head is to the dust extraction pipe opening (31) in the adjacent dust extraction zone, the greater the opening angle of the gate (32).

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