Laser cutting method and laser cutting control device

Abstract

The present application provides a laser cutting method and laser cutting control device for cutting decorative panels coated on a gypsum board surface. The method comprises: obtaining the conveying speed of the gypsum board in real time; obtaining the spacing parameters between two adjacent gypsum boards; obtaining a third cutting path based on the spacing parameters and the conveying speed, the third cutting path connecting the first cutting path and the second cutting path and being parallel to the conveying direction; and controlling a laser cutting machine to sequentially cut the decorative panel according to the first cutting path, the third cutting path, and the second cutting path. The method provided in the present application obtains the conveying speed of the gypsum board and the spacing parameters between two adjacent gypsum boards in real time, and obtains the third cutting path parallel to the conveying direction of the gypsum board based on the conveying speed and spacing parameters. The method controls the laser cutting machine to cut a predetermined notch on the edge of the decorative panel, effectively ensuring cutting accuracy and thoroughness, and achieving a better cutting effect.

Description

Technical Field

[0001] The present application relates to the technical field of gypsum board production, and in particular to a laser cutting method and a laser cutting control device. Background Art

[0002] Gypsum board is a common building decoration material. Due to its light weight, easy construction and good fire resistance, it is widely used in building partitions, ceilings, etc.

[0003] Currently, the production and processing of gypsum board-wrapped decorative panels requires not only cutting the decorative panels between adjacent gypsum boards, but also notching the edges of the decorative panels between adjacent gypsum boards. This notching process is prone to incomplete and uneven cutting, which affects the overall quality of the gypsum board and decorative panels. Summary of the Invention

[0004] In order to overcome the problems existing in the related art, the present application provides a laser cutting method and a laser cutting control device.

[0005] According to a first aspect of an embodiment of the present application, a laser cutting method is provided for cutting a decorative board coated on a surface of a gypsum board, the method comprising:

[0006] Get the delivery speed of gypsum board in real time;

[0007] Obtaining a pre-stored first cutting length and a second cutting length;

[0008] determining a first cutting path according to the conveying speed and the first cutting length, and determining a second cutting path according to the conveying speed and the second cutting length;

[0009] Obtaining the spacing parameters between two adjacent gypsum boards;

[0010] obtaining a third cutting path according to the spacing parameter and the conveying speed, wherein the third cutting path is parallel to the conveying direction and connects the first cutting path and the second cutting path;

[0011] The laser cutting machine is controlled to cut the decorative panel in sequence according to the first cutting path, the third cutting path and the second cutting path.

[0012] Optionally, determining a first cutting path according to the conveying speed and the first cutting length, and determining a second cutting path according to the conveying speed and the second cutting length includes:

[0013] Obtaining a conveying speed threshold of the gypsum board;

[0014] The first cutting path and the second cutting path are determined according to a ratio of the conveying speed to the conveying speed threshold.

[0015] Optionally, determining the first cutting path and the second cutting path according to the ratio of the conveying speed to the conveying speed threshold includes:

[0016] When the ratio of the conveying speed to the conveying speed threshold is less than or equal to 1, the first cutting path and the second cutting path are perpendicular to the conveying direction of the gypsum board.

[0017] Optionally, the first cutting path is determined according to the ratio of the conveying speed to the conveying speed threshold.

[0018] and the second cutting path, comprising: when the ratio of the conveying speed to the conveying speed threshold is greater than 1, the first cutting path and the second cutting path

[0019] The cutting path forms a preset angle with the conveying direction of the gypsum board.

[0020] Optionally, the first cutting path, the second cutting path and the third cutting path are sequentially connected to form a trapezoid, the first cutting path and the second cutting path form two sides of the trapezoid, and the third cutting path forms the long bottom side of the trapezoid.

[0021] Optionally, obtaining the spacing parameters between two adjacent gypsum boards includes:

[0022] Get the number of pulse signals sent by the ranging encoder;

[0023] The spacing parameter between two adjacent gypsum boards is obtained according to the number of pulse signals sent by the distance measuring encoder.

[0024] Optionally, obtaining the third cutting path according to the spacing parameter and the conveying speed includes: obtaining a cutting time according to a cutting speed of a laser cutting machine and the spacing parameter;

[0025] Obtaining a conveying distance of the gypsum board according to the cutting time and the conveying speed;

[0026] The third cutting path is obtained according to a difference between the spacing parameter and the conveying distance.

[0027] Optionally, obtaining the cutting time according to the cutting speed of the laser cutting machine and the spacing parameter includes:

[0028] Get the pre-stored difference threshold;

[0029] Obtaining a difference parameter between the spacing parameter and the difference threshold;

[0030] The third cutting path is obtained according to the cutting speed and the difference parameter.

[0031] Optionally, the method further includes:

[0032] The laser cutting machine is controlled to emit a laser beam perpendicular to the gypsum board.

[0033] According to a second aspect of an embodiment of the present application, there is provided a laser cutting control device, comprising: a processor;

[0034] a memory configured to store processor-executable instructions;

[0035] Wherein, the processor is configured to execute the laser cutting method as described in the first aspect.

[0036] The technical solution provided by the embodiments of the present application may include the following beneficial effects: the method provided by the present application obtains the conveying speed of the gypsum board and the spacing parameters of two adjacent gypsum boards in real time, obtains a third cutting path parallel to the conveying direction of the gypsum board according to the conveying speed and the spacing parameters, and controls the laser cutting machine to cut the decorative board wrapped on the surface of the gypsum board according to the first cutting path, the third cutting path and the second cutting path at one time, so as to cut the edge part of the decorative board with a preset notch of the device, effectively ensuring the cutting accuracy and thorough cutting, and achieving better cutting effect.

[0037] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0039] Figure 1 is a schematic flow chart of a laser cutting method according to an exemplary embodiment;

[0040] Figure 2 is a schematic flow chart of a laser cutting method according to an exemplary embodiment;

[0041] Figure 3 is a schematic flow chart of a laser cutting method according to an exemplary embodiment;

[0042] Figure 4 is a schematic flow chart of a laser cutting method according to an exemplary embodiment;

[0043] Figure 5is a schematic flow chart of a laser cutting method according to an exemplary embodiment;

[0044] Figure 6 is a schematic diagram of a cutting path of a laser cutting machine according to an exemplary embodiment;

[0045] Figure 7 The figure is another schematic diagram of a cutting path of a laser cutting machine according to an exemplary embodiment. DETAILED DESCRIPTION

[0046] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0047] Gypsum board is a common building decoration material. Due to its light weight, easy construction and good fire resistance, it is widely used in building partitions, ceilings, etc.

[0048] Currently, the production and processing of decorative panels covering the five sides of gypsum board requires not only cutting the decorative panels between adjacent gypsum boards but also notching the edges of the decorative panels between adjacent gypsum boards. This notching process can easily lead to incomplete and uneven cutting, impacting the overall quality of the gypsum board and decorative panels.

[0049] In order to solve the above problems, the present application proposes a laser cutting method for cutting decorative panels covered on the surface of gypsum boards, and the laser cutting method includes the following steps: obtaining the conveying speed of the gypsum boards in real time; obtaining the pre-stored first cutting length and second cutting length; determining the first cutting path according to the conveying speed and the first cutting length, and determining the second cutting path according to the conveying speed and the second cutting length; obtaining the spacing parameters of two adjacent gypsum boards; obtaining a third cutting path according to the spacing parameters and the conveying speed, wherein the third cutting path is parallel to the conveying direction, and the third cutting path connects the first cutting path and the second cutting path; controlling the laser cutting machine to cut the decorative panels according to the first cutting path, the third cutting path and the second cutting path in sequence. The method provided in the present application obtains the conveying speed of the gypsum board and the spacing parameters of two adjacent gypsum boards in real time, determines the first cutting path and the second cutting path according to the conveying speed and the pre-stored first cutting length and the second cutting length, and also obtains the third cutting path parallel to the conveying direction of the gypsum board according to the conveying speed and the spacing parameters, and controls the laser cutting machine to cut the decorative board covered on the surface of the gypsum board according to the first cutting path, the third cutting path and the second cutting path in sequence, so as to cut the edge part of the decorative board into a preset shape, effectively ensuring the cutting accuracy and thorough cutting, and achieving better cutting effect.

[0050] According to an exemplary embodiment, Figure 1 As shown, this embodiment provides a flow chart of a laser cutting method for cutting a decorative board covered on a surface of a gypsum board. The laser cutting method includes the following steps:

[0051] S100: obtaining the conveying speed of the gypsum board in real time.

[0052] In this step, for example, a tachometer wheel and an encoder can be set up to detect the conveying speed of the gypsum board. The tachometer wheel is located above the gypsum board, and the encoder is electrically connected to the tachometer wheel and the processor, respectively. The processor determines the conveying speed of the gypsum board based on the detection results of the tachometer wheel and the encoder. Specifically, the edge of the tachometer wheel is attached to the surface of the decorative board. As the gypsum board is conveyed, it rotates synchronously with the decorative board on the surface of the gypsum board. The encoder converts the tachometer wheel's rotation speed into an electrical signal and transmits it to the processor, thereby obtaining the conveying speed of the gypsum board.

[0053] In this step, real-time means that the conveying speed of the gypsum board is continuously detected during the transportation of the gypsum board. For example, the detection may be performed every 1 second or every 0.2 seconds.

[0054] S200, obtaining a pre-stored first cutting length and a second cutting length;

[0055] Before cutting the decorative panels covered with different specifications of gypsum boards, the staff inputs the first cutting length and the second cutting length into the memory based on the shape of the notch to be cut, and then cuts the notch of the desired shape into the decorative panels. Figure 6 The first cutting length is used to characterize the cutting length of the laser cutting machine's cutting starting point perpendicular to the gypsum board conveying direction, that is, the length of the first cutting path 1. The second cutting length is used to characterize the cutting length of the laser cutting machine's cutting end point perpendicular to the gypsum board conveying direction, that is, the length of the second cutting path 2.

[0056] S300, determining a first cutting path according to the conveying speed and the first cutting length, and determining a second cutting path according to the conveying speed and the second cutting length;

[0057] In actual production, there is a certain error range for the cutting notch of the decorative board. However, the cutting direction of the laser cutting machine is at a preset angle to the conveying direction of the gypsum board. In order to cut a rectangular notch, it is judged whether the conveying speed of the gypsum board will cause the cut notch to exceed the error range, thereby determining the first cutting path and the second cutting path, thereby improving the cutting effect on both sides of the rectangular notch.

[0058] S400, obtaining the spacing parameters between two adjacent gypsum boards;

[0059] A first sensor is set to detect the end information of two adjacent gypsum boards (the tail information of the previous gypsum board and the head information of the next gypsum board). When the tail information of the previous gypsum board is detected, the processor starts to count the number of pulse signals generated by the ranging encoder. When the head information of the next gypsum board is detected, the processor stops counting the number of pulse signals generated by the ranging encoder. The processor then calculates the number of pulse signals obtained. It is known that the distance of the gypsum board transported by one rotation of the output shaft of the driving motor is known. By obtaining the number of pulse signals emitted by the ranging encoder, the spacing parameters between the two adjacent gypsum boards can be obtained.

[0060] S500, obtaining a third cutting path according to the spacing parameter and the conveying speed, wherein the third cutting path is parallel to the conveying direction and connects the first cutting path and the second cutting path;

[0061] Although the cutting speed of the laser cutting machine is very fast compared to the conveying speed of the gypsum board, the conveying speed of the gypsum board cannot be ignored, and changes in the conveying speed of the gypsum board will affect the cutting length. In this step, the cutting length of the laser cutting machine is automatically calculated and corrected according to the spacing parameters of the two adjacent gypsum boards and the real-time conveying speed of the gypsum board, ensuring the accuracy of the third cutting path.

[0062] S600: Control the laser cutting machine to cut the decorative panel in sequence according to the first cutting path, the third cutting path, and the second cutting path.

[0063] The laser cutting machine is controlled to cut according to the first cutting path, the third cutting path and the second cutting path connected in sequence, so that the cutting path inside the decorative board is continuous, achieving thorough cutting and preventing waste from falling on the gypsum board, thereby improving the quality of the gypsum board.

[0064] In this embodiment, the conveying speed of the gypsum board and the spacing parameters of two adjacent gypsum boards are obtained in real time, and the first cutting path and the second cutting path are determined according to the conveying speed and the pre-stored first cutting length and the second cutting length. The third cutting path parallel to the conveying direction of the gypsum board is also obtained according to the conveying speed and the spacing parameters. The laser cutting machine is controlled to cut the decorative board wrapped on the surface of the gypsum board according to the first cutting path, the third cutting path and the second cutting path in sequence, so as to cut a preset shape of notch on the edge of the decorative board, effectively ensuring the cutting accuracy and thorough cutting, and achieving better cutting effect.

[0065] like Figure 2 As shown, in step S300, a first cutting path is determined according to the conveying speed and the first cutting length, and a second cutting path is determined according to the conveying speed and the second cutting length, specifically including:

[0066] S301, obtaining a conveying speed threshold of the gypsum board;

[0067] Although laser cutting machines offer high cutting speeds, when the conveyor speed of gypsum board reaches a certain value, the laser cutting machine will produce significant errors when cutting along a rectangular trajectory, affecting the cutting effect. By simulating gypsum board at different conveyor speeds and observing the shape of the notch produced when the laser cutter cuts the decorative board along a rectangular trajectory, we confirmed whether the notch shape was within the error range. The conveyor speed at which the notch shape was at the critical error range was used as the conveyor speed threshold and stored in memory.

[0068] It is understandable that when cutting decorative panels on gypsum boards of different specifications, the specifications of the notches to be cut are also different, that is, the first cutting length and the second cutting length vary, resulting in different cutting times required by the laser cutting machine to cut the first cutting length and the second cutting length, which in turn results in different distances of gypsum board transportation within the cutting time. For example, when a longer first cutting length is required, the required cutting time is longer, resulting in the gypsum board being transported a greater distance within the cutting time. The distance the gypsum board is transported is the deviation generated when the laser cutting machine cuts along a rectangular trajectory. Therefore, when cutting longer first and second cutting lengths, a smaller conveying speed threshold is required. From the above, it can be seen that the conveying speed thresholds obtained when cutting decorative panels on gypsum boards of different specifications are also different, and the conveying speed threshold is inversely proportional to the values ​​of the first and second cutting lengths.

[0069] S302 : Determine a first cutting path and a second cutting path according to a ratio of a conveying speed to a conveying speed threshold.

[0070] When the acquired gypsum board conveying speed is slow but does not exceed the preset conveying speed threshold, and the shape error after the laser cutting machine cuts along the rectangular trajectory is within the allowable range, step S303 is executed. When the acquired gypsum board conveying speed is fast and exceeds the preset conveying speed threshold, and the laser cutting machine cuts along the rectangular trajectory with significant error, steps S304 and S305 are executed.

[0071] S303 : When the ratio of the conveying speed to the conveying speed threshold is less than or equal to 1, the first cutting path and the second cutting path are perpendicular to the conveying direction of the gypsum board.

[0072] In step S303, refer to Figure 6 The length of the first cutting path 1 is the pre-stored first cutting length, and the length of the second cutting path 2 is the pre-stored second cutting length. While ensuring the cutting effect, the load of the processor is reduced.

[0073] S304: When the ratio of the conveying speed to the conveying speed threshold is greater than 1, the first cutting path and the second cutting path form a preset angle with the conveying direction of the gypsum board.

[0074] S305: The first cutting path, the second cutting path, and the third cutting path are sequentially connected to form a trapezoid, wherein the first cutting path and the second cutting path form two sides of the trapezoid, and the third cutting path forms the long bottom side of the trapezoid.

[0075] In steps S304 and S305, Figure 7 As shown, the length of the first cutting path 1' is greater than the pre-stored cutting length 3, and the second cutting path 2' is greater than the pre-stored cutting length 3. It can be understood that, referring to Figure 6When the gypsum board is conveyed at a high speed, if the laser cutting machine still cuts the first cutting path 1 and the second cutting path 2 in a direction perpendicular to the edge of the decorative board (i.e., a rectangular track), the decorative board will have been conveyed a long distance during the cutting process of the laser cutting machine, resulting in the first cutting path 1 and the second cutting path 2 being obviously not perpendicular to the edge of the decorative board, thereby affecting the subsequent process. Figure 7 When the laser cutting machine cuts the first cutting path 1', it is perpendicular to the gypsum board conveying direction ( Figure 7 In the Y direction shown in FIG, there is a first component speed, and in the conveying direction of the gypsum board ( Figure 7 In the X direction shown in the figure, the laser cutting machine has a second component speed. When the laser cutting machine moves the pre-stored cutting length 3 in the Y direction, it also moves a distance in the X direction. The gypsum board also moves a distance in the X direction. It can be seen from the above that the first cutting path 1', the second cutting path 2' and the third cutting path are connected in sequence to form a trapezoid. The first cutting path 1' and the second cutting path 2' form the two sides of the trapezoid, and the third cutting path forms the long bottom side of the trapezoid. The distance moved by the gypsum board is obtained by the conveying speed of the gypsum board and the cutting time of the laser cutting machine, and the distance moved by the laser cutting machine in the X direction is adjusted to be equal to the distance moved by the gypsum board. It can be understood that the second cutting path 2' can also be achieved by the above method. The above method can ensure that the laser cutting machine can cut a rectangular notch when the gypsum board is in a high-speed conveying state, thereby improving the cutting efficiency and cutting effect.

[0076] In the method provided in this embodiment, by comparing the conveying speed of the gypsum board with the conveying speed threshold, the cutting trajectory of the laser cutting machine is automatically adjusted to achieve a rectangular notch formed by the cutting, thereby improving the cutting effect of the decorative board and the overall quality of the gypsum board and decorative board.

[0077] like Figure 3 As shown, in step S400, obtaining the spacing parameters between two adjacent gypsum boards specifically includes:

[0078] S401, obtaining the number of pulse signals sent by the ranging encoder;

[0079] The distance encoder is installed on the drive unit of the gypsum board conveyor line. The drive unit can be, for example, a drive motor. When the output shaft of the drive motor rotates, the distance encoder will rotate synchronously with the rotation of the output shaft and generate a pulse signal. For example, when the output shaft of the drive motor rotates one circle, the distance encoder will send out a pulse signal of 500.

[0080] S402: Obtain the spacing parameter between two adjacent gypsum boards according to the number of pulse signals sent by the distance measuring encoder.

[0081] The movement of gypsum boards on the conveyor line is driven by the output shaft of the drive motor. If the distance traveled by each gypsum board during one rotation of the drive motor's output shaft is known, the spacing between two adjacent gypsum boards can be determined by measuring the number of pulses emitted by the distance encoder. For example, one rotation of the drive motor's output shaft moves the gypsum boards 50 cm. The distance encoder also rotates one rotation along with the drive motor's output shaft. When the drive motor rotates twice, the gypsum boards on the conveyor line move forward 100 cm. The distance encoder also rotates twice. Assuming 500 pulses per rotation, the distance encoder sends 1000 pulses to the processor for every 100 cm of forward movement. When the distance encoder emits 800 pulses, the processor quickly calculates that the gypsum boards have moved forward 80 cm.

[0082] Before obtaining the number of pulse signals sent by the ranging encoder in step S401, the method further includes:

[0083] Get the end information of two adjacent gypsum boards.

[0084] In one example, the first sensor is a distance sensor, and the preset distance is the distance between the detection end and the gypsum board.

[0085] When the first sensor detects the surface of the gypsum board, it sends a continuous electrical signal to the processor; when the current gypsum board 5 exceeds the position of the first sensor, that is, the first sensor is located between two adjacent gypsum boards, the first sensor does not send an electrical signal.

[0086] Signal to the processor. That is, when the processor stops receiving the electrical signal from the first sensor, the first sensor detects the end of the previous gypsum board. When the processor receives the electrical signal from the first sensor again, the first sensor detects the head of the next gypsum board. From the above, it can be seen that the length of time that the processor does not receive the electrical signal from the first sensor is

[0087] That is, the time length that the portion between two adjacent gypsum boards is transported above the first sensor, combined with the number of distance encoders 0 obtained, can be used to calculate the spacing parameter between the current two adjacent gypsum boards.

[0088] In some possible embodiments, the spacing parameter between two adjacent gypsum boards may be calculated based on the duration during which the processor does not receive the electrical signal sent by the first sensor and the conveying speed of the gypsum boards.

[0089] On the gypsum board conveyor line, it is impossible to ensure that the distance between any two adjacent gypsum boards is equal.

[0090] The end information of each gypsum board is combined with the number of pulse signals sent by the ranging encoder to obtain the spacing parameters between each two adjacent gypsum boards 5, thereby realizing automatic cutting and improving the cutting effect of the decorative board.

[0091] like Figure 4 As shown, in step S500, a third cutting path is obtained according to the spacing parameter and the conveying speed, wherein:

[0092] The third cutting path is parallel to the conveying direction and connects the first cutting path and the second cutting path, specifically including:

[0093] S501, obtaining cutting time according to cutting speed and spacing parameters of the laser cutting machine;

[0094] In step S501, the laser cutting machine sets a fixed cutting speed to obtain the distance between two adjacent gypsum boards.

[0095] After the parameters are calculated, the cutting time required for the laser cutting machine to cut the spacing parameters can be obtained according to L=vt.

[0096] S502, obtaining the conveying distance of the gypsum board according to the cutting time and conveying speed;

[0097] In step S502, the conveying speed of the gypsum board is acquired in real time, and the displacement of the gypsum board before and after the cutting time is calculated based on the cutting time calculated in step S501.

[0098] S503: Obtain a third cutting path according to the difference between the spacing parameter and the conveying distance.

[0099] In one example, referring to Figure 6 The gypsum board is transported along the X direction, and the laser cutting machine cuts the third cutting path in the reverse direction of the X direction. It can be known that the difference between the spacing parameters between two adjacent gypsum boards and the transport distance of the gypsum boards is the length of the third cutting path.

[0100] In some possible embodiments, the cutting direction of the laser cutting machine is the same as the conveying direction of the gypsum board, wherein the sum of the spacing parameter and the conveying distance is the length of the third cutting path.

[0101] Step S501, obtaining the cutting time according to the cutting speed and spacing parameters of the laser cutting machine, further comprising:

[0102] Get the pre-stored difference threshold;

[0103] Get the difference parameter between the spacing parameter and the difference threshold;

[0104] A third cutting path is obtained according to the cutting speed and the difference parameter.

[0105] During production, to further ensure cutting quality and the bond between the gypsum board and the decorative panel, a margin can be set between the laser cutting machine's cutting position and the edge of the gypsum board. This margin is a pre-stored difference threshold. The difference threshold can be, for example, 0.2mm to 1mm, with 0.5mm being an example. For example, in the conveying direction, the processor controls the laser cutting machine to start cutting 0.5mm after the end of the previous gypsum board and end cutting 0.5mm before the beginning of the next gypsum board.

[0106] Specifically, since a cutting allowance is set, when calculating the cutting time of the laser cutting machine, the spacing parameters between the two adjacent gypsum boards and the difference parameters of the difference threshold should be obtained first, and the cutting time is calculated according to the cutting speed and difference parameters of the laser cutting machine, and then the third cutting path is obtained according to the method such as steps S502 and S503.

[0107] In this embodiment, although the cutting speed of the laser cutting machine is very fast compared to the conveying speed of the gypsum board, the conveying speed of the gypsum board cannot be ignored. In this step, the cutting time is calculated based on the spacing parameters of the two adjacent gypsum boards and the cutting speed of the laser cutting machine, and the conveying speed of the gypsum board is obtained in real time. The conveying distance of the gypsum board within the cutting time is calculated in real time based on the conveying speed and cutting time of the gypsum board, and the length of the laser cutting is automatically calculated and corrected to ensure the accuracy of the third cutting path.

[0108] In one embodiment, the cutting method further comprises:

[0109] Control the laser cutting machine to emit a laser beam perpendicular to the gypsum board.

[0110] It should be noted that for safety reasons, the laser cutting machine's laser emission direction is toward the ground. The cutting head of the laser cutting machine is positioned higher than the decorative panels on the gypsum board, cutting vertically from the top to the bottom of the decorative panels.

[0111] like Figure 5 As shown, in step S600, controlling the laser cutting machine to cut the decorative plate according to the first cutting path, the third cutting path, and the second cutting path in sequence, specifically includes:

[0112] S601, obtaining a laser cutting machine start signal;

[0113] In one example, when the second sensor detects the end information of the previous gypsum board, it sends a signal to the laser cutting machine, and the laser cutting machine starts.

[0114] S602 , controlling the laser cutting machine to cut the decorative panel in sequence according to the first cutting path, the third cutting path, and the second cutting path.

[0115] In step S602, refer to Figure 6 , the laser cutting machine starts from bottom to top ( Figure 6 The first cutting path 1 is cut in the Y direction as shown in FIG, and then the cutting path is cut parallel to the conveying direction ( Figure 6 When cutting the third cutting path, the speed encoder detects the conveying speed of the gypsum board in real time, calculates and corrects the conveying distance of the gypsum board in step S500, and then adjusts the third cutting path. After cutting the third cutting path, the gypsum board is cut from top to bottom ( Figure 6 The second cutting path 2 is cut in the X direction as shown in FIG, and the cutting of a single notch is finally completed.

[0116] It should be noted that, since this solution is applied to the online cutting of decorative panels covered on gypsum boards, it is necessary to symmetrically cut both sides of the decorative panels between adjacent gypsum boards, so the laser cutting machines in this solution are set in pairs.

[0117] An embodiment of the present application also provides a laser cutting control device, comprising a processor; a memory configured to store processor-executable instructions; wherein the processor is configured to execute the executable instructions in the memory to implement the steps of the above method.

[0118] By using the laser cutting control device provided in the present application, the conveying speed of the gypsum board and the spacing parameters of two adjacent gypsum boards can be obtained in real time. The first cutting path and the second cutting path are determined according to the conveying speed and the pre-stored first cutting length and the second cutting length. The third cutting path parallel to the conveying direction of the gypsum board is also obtained according to the conveying speed and the spacing parameters. The laser cutting machine is controlled to cut the decorative board covered on the surface of the gypsum board according to the first cutting path, the third cutting path and the second cutting path in sequence, so as to cut a preset shape of notch on the edge of the decorative board, effectively ensuring the cutting accuracy and thoroughness of the decorative board, and achieving better cutting effect.

[0119] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0120] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A laser cutting method for cutting a decorative board coated on a surface of a gypsum board, characterized in that: The method comprises: Get the delivery speed of gypsum board in real time; Obtaining a pre-stored first cutting length and a second cutting length; determining a first cutting path according to the conveying speed and the first cutting length, and determining a second cutting path according to the conveying speed and the second cutting length; Obtaining the spacing parameters between two adjacent gypsum boards; obtaining a third cutting path according to the spacing parameter and the conveying speed, wherein the third cutting path is parallel to the conveying direction and connects the first cutting path and the second cutting path; Controlling the laser cutting machine to cut the decorative plate in sequence according to the first cutting path, the third cutting path, and the second cutting path, so as to cut a notch of a preset shape on an edge portion of the decorative plate; The obtaining of a third cutting path according to the spacing parameter and the conveying speed includes: Obtaining cutting time according to the cutting speed of the laser cutting machine and the spacing parameters; Obtaining a conveying distance of the gypsum board according to the cutting time and the conveying speed; The third cutting path is obtained according to a difference between the spacing parameter and the conveying distance.

2. The laser cutting method according to claim 1, characterized in that: The step of determining a first cutting path according to the conveying speed and the first cutting length, and determining a second cutting path according to the conveying speed and the second cutting length, comprises: Obtaining a conveying speed threshold of the gypsum board; The first cutting path and the second cutting path are determined according to a ratio of the conveying speed to the conveying speed threshold.

3. The laser cutting method according to claim 2, characterized in that: The determining the first cutting path and the second cutting path according to the ratio of the conveying speed to the conveying speed threshold includes: When the ratio of the conveying speed to the conveying speed threshold is less than or equal to 1, the first cutting path and the second cutting path are perpendicular to the conveying direction of the gypsum board.

4. The laser cutting method according to claim 2, characterized in that: The determining the first cutting path and the second cutting path according to the ratio of the conveying speed to the conveying speed threshold includes: When the ratio of the conveying speed to the conveying speed threshold is greater than 1, the first cutting path and the second cutting path form a preset angle with the conveying direction of the gypsum board.

5. The laser cutting method according to claim 4, characterized in that: The first cutting path, the second cutting path and the third cutting path are sequentially connected to form a trapezoid, the first cutting path and the second cutting path form two sides of the trapezoid, and the third cutting path forms a long bottom side of the trapezoid.

6. The laser cutting method according to claim 1, characterized in that: The obtaining of the spacing parameters between two adjacent gypsum boards includes: Get the number of pulse signals sent by the ranging encoder; The spacing parameter between two adjacent gypsum boards is obtained according to the number of pulse signals sent by the distance measuring encoder.

7. The laser cutting method according to claim 1, characterized in that: The obtaining of the cutting time according to the cutting speed of the laser cutting machine and the spacing parameter includes: Get the pre-stored difference threshold; Obtaining a difference parameter between the spacing parameter and the difference threshold; The third cutting path is obtained according to the cutting speed and the difference parameter.

8. The laser cutting method according to claim 1, characterized in that: The method further comprises: The laser cutting machine is controlled to emit a laser beam perpendicular to the gypsum board.

9. A laser cutting control device, characterized in that: include: processor; a memory configured to store processor-executable instructions; Wherein, the processor is configured to execute the laser cutting method according to any one of claims 1 to 8.

Images