Multi-cutting-head cutting machine and control method

Abstract

The invention discloses a multi-cutting-head cutting machine and a control method, the multi-cutting-head cutting machine comprises a cutting machine frame, the cutting machine frame comprises a cross beam rail arranged in the first axial direction, a plurality of cutting heads are arranged on the cross beam rail side by side, and a tool apron on each cutting head is driven by a corresponding second shaft motor in the second axial direction; the first axial direction is perpendicular to the second axial direction; the plurality of cutting heads comprise at least one fixed cutting head and at least one adjustable cutting head; the adjusting type cutting head comprises an adjusting assembly, and the adjusting assembly is used for controlling a tool apron on the adjusting type cutting head to move in the first axial direction. By means of the multi-cutting-head cutting machine, the cutting efficiency can be improved.

Description

Technical Field

[0001] The present application belongs to the technical field of cutting equipment, and in particular, relates to a multi-cutting head cutting machine and a control method. Background Art

[0002] In the field of cutting equipment, smart cutting machines are one of the important processing tools. Most existing smart cutting machines use a single camera corresponding to a single cutting head design architecture to perform contour cutting tasks. This traditional model only needs to cut out the required shape synchronously when facing some simple cutting needs, such as cutting ordinary whiteboard products to be cut. The technical requirements are relatively low and can meet basic production.

[0003] However, with the development of processing technology, higher requirements are put forward for contour cutting. Currently, only single-cutting head equipment can achieve contour cutting function well. When trying to expand the cutting head to two or more to improve cutting efficiency, many problems are faced. Summary of the invention

[0004] The embodiment of the present application provides a multi-cutting head cutting machine and a control method. The multi-cutting head cutting machine of the embodiment of the present application can improve the cutting efficiency when facing contour cutting.

[0005] In a first aspect, an embodiment of the present application provides a multi-cutting head cutting machine, and a method includes:

[0006] A cutting frame, the cutting frame comprises a beam track arranged along a first axial direction, a plurality of cutting heads are arranged in parallel on the beam track, a knife seat on each cutting head is driven along a second axial direction by a second axis motor configured respectively, and the first axial direction is perpendicular to the second axial direction;

[0007] The plurality of cutting heads include at least one fixed cutting head and at least one adjustable cutting head;

[0008] The adjustable cutting head comprises an adjusting component, and the adjusting component is used for controlling the knife seat on the adjustable cutting head to move along a first axial direction.

[0009] Optionally, the adjustment components include:

[0010] The first axis motor, the knife seat on the adjustable cutting head is driven along the first axis by the first axis motor.

[0011] Optionally, the adjustment component also includes:

[0012] A linear guide rail, a knife seat on the adjustable cutting head is arranged on the linear guide rail, and the linear guide rail is arranged along a third axial direction, and the third axial direction is respectively perpendicular to the first axial direction and the second axial direction.

[0013] Optionally, an image acquisition device is provided below the fixed cutting head, and a scanning direction of the image acquisition device is parallel to the third axial direction, and the third axial direction is respectively perpendicular to the first axial direction and the second axial direction.

[0014] Optionally, the tool holder of the fixed cutting head is driven along a third axial direction by a third axis motor.

[0015] Optionally, the fixed cutting head includes a cutting head drive board, a motor holder and a camera bracket connected in sequence from top to bottom, the cutting head drive board is connected to the crossbeam track, the motor holder is used to place the third axis motor, and the camera bracket is used to place the image acquisition device.

[0016] Optionally, the multi-cutting head cutting machine includes: a controller, the controller being communicatively connected to the image acquisition device and the adjustable cutting head respectively;

[0017] The image acquisition device is used to scan the marking information of the product to be cut and send the marking information to the controller;

[0018] The controller is used to control the movement direction of the adjustable cutting head according to the marking information.

[0019] Optionally, the multi-cutting head cutting machine includes a cutting platform, which is placed below the cutting frame and is used to place the product to be cut.

[0020] Optionally, the cutting platform is driven along the first axial direction by a driving method, and the driving methods include roller type and platform type.

[0021] Optionally, each of the plurality of cutting heads may be movable along the crossbeam track.

[0022] In a second aspect, an embodiment of the present application provides a control method for a cutting machine, the control method for a cutting machine is applied to a multi-cutting head cutting machine as described above, and the control method for a cutting machine includes:

[0023] Scan the product to be cut placed on the cutting platform by an image acquisition device to obtain marking information of the product to be cut;

[0024] The marking information is processed by a controller to determine a first relative position between the fixed cutting head and the product to be cut;

[0025] Determining a target cutting position of the adjustable cutting head according to the first relative position and a to-be-cut contour of the to-be-cut product;

[0026] The adjustable cutting head is controlled to be adjusted to the target cutting position before cutting the product.

[0027] Optionally, determining a target cutting position of the adjustable cutting head according to the first relative position and a to-be-cut contour of the to-be-cut product includes:

[0028] Determining a third relative position of the adjustable cutting head and the product to be cut according to the first relative position and the second relative position of the fixed cutting head and the adjustable cutting head;

[0029] The target cutting position of the adjustable cutting head is determined according to the third relative position and the contour of the product to be cut.

[0030] Optionally, the adjustable cutting head is controlled to be adjusted to a target cutting position to cut the product to be cut, including:

[0031] Generate control instructions to the motors of each axis of the adjustable cutting head according to the target cutting position, so as to drive the knife holder of the adjustable cutting head to adjust to the target cutting position;

[0032] The asynchronously driven adjustable cutting head and the fixed cutting head cut the product to be cut according to the contour to be cut.

[0033] The multi-cutting head cutting machine provided in the embodiment of the present application includes a cutting frame, the cutting frame includes a beam track arranged along a first axial direction, a plurality of cutting heads are arranged in parallel on the beam track, and the tool holder on each cutting head is driven along a second axial direction by a second axis motor configured respectively, and the first axial direction is perpendicular to the second axial direction. The multiple cutting heads include at least one fixed cutting head and at least one adjustable cutting head; the adjustable cutting head includes an adjustment component, and the adjustment component is used to control the tool holder on the adjustable cutting head to move along the first axial direction. The embodiment of the present application improves the cutting efficiency by configuring multiple cutting heads for cutting on the one hand, and on the other hand, the adjustable cutting heads can be accurately adjusted in three-axis directions, thereby realizing contour cutting of the product to be cut by multiple cutting heads, and broadening the application scope of the multi-cutting head cutting machine provided in the present embodiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The technical solution and beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0035] Figure 1 is a first stereoscopic view of a multi-cutting head cutting machine provided in an embodiment of the present application;

[0036] Figure 2 is a second stereoscopic view of the multi-cutting head cutting machine provided in an embodiment of the present application;

[0037] Figure 3 It is a front view of a multi-cutting head cutting machine provided in an embodiment of the present application;

[0038] Figure 4 A three-dimensional diagram of an adjustable cutting head in a multi-cutting head cutting machine provided in an embodiment of the present application;

[0039] Figure 5A right side view of an adjustable cutting head in a multi-cutting head cutting machine provided in an embodiment of the present application;

[0040] Figure 6 A front view of an adjustable cutting head in a multi-cutting head cutting machine provided in an embodiment of the present application;

[0041] Figure 7 A three-dimensional diagram of a fixed cutting head in a multi-cutting head cutting machine provided in an embodiment of the present application;

[0042] Figure 8 A right side view of a fixed cutting head in a multi-cutting head cutting machine provided in an embodiment of the present application;

[0043] Fig. 9 A front view of a fixed cutting head in a multi-cutting head cutting machine provided in an embodiment of the present application;

[0044] Fig.10 A flow chart of a control method for a cutting machine provided in an embodiment of the present application.

[0045] Description of the drawings: 100, crossbeam track; 110, adjustable cutting head; 111, cutting head drive plate; 112, motor holder; 113, third axis motor; 114, cutting tool holder; 115, linear guide rail; 116, trapezoidal lead screw; 117, first axis motor; 120, fixed cutting head; 121, cutting head drive plate; 122, motor holder; 123, third axis motor; 124, cutting tool holder; 125, image acquisition device; 126, camera bracket; 200, cutting platform. DETAILED DESCRIPTION

[0046] Please refer to the drawings, in which the same component symbols represent the same components. The following description is based on the illustrated specific embodiments of the present application, which should not be construed as limiting other specific embodiments of the present application that are not described in detail herein.

[0047] In the related technology, a single camera corresponding to a single cutting head design architecture is used to perform contour cutting tasks. When facing some simple cutting requirements, such as cutting ordinary whiteboard products to be cut, it is only necessary to cut out the required shape synchronously. The technical requirements are relatively low and can meet basic production.

[0048] However, when it comes to contour cutting, not only cutting accuracy but also cutting efficiency is required. The solution using a single cutting head cannot meet the needs of contour cutting. Among them, the reason why contour cutting is significantly different from simple cutting lies in its strict requirements on accuracy and graphic adaptability. When performing contour cutting, first print the pattern on the product to be cut, and then the cutting machine uses a high-resolution camera or other high-precision image acquisition device to capture the marking information on the surface of the product to be cut. These marking information serves as positioning reference points and carries key coordinate information. Contour cutting is then performed based on the coordinate information located by the marking information.

[0049] Generally speaking, using a single cutting head for contour cutting can meet basic cutting needs, but when trying to expand the cutting head to two or more to improve cutting efficiency, there are many difficulties. Since it is impossible to ensure that all products to be cut are absolutely parallel to the X-axis track in actual operation, when multiple cutting heads are working at the same time, the first cutting head may be able to cut accurately according to the established program, but the remaining cutting heads are prone to displacement deviation, making it difficult to synchronously and accurately complete contour cutting.

[0050] Although the existing multi-cutting head cutting technology has been applied in the field of coil processing, the key role is played by the correction system. The correction system is usually composed of high-precision sensors, controllers and actuators. The sensor monitors the relative position relationship between the product to be cut and the X-axis track of the cutting head in real time. Once it detects that the product to be cut is tilted or offset, it quickly transmits the signal to the controller. The controller performs rapid calculations based on the preset algorithm, accurately calculates the amplitude that needs to be adjusted, and then drives the actuator to adjust the position of the product to be cut. Through continuous dynamic monitoring and adjustment, it ensures that the product to be cut and the X-axis track of the cutting head are always in a parallel state, effectively avoiding precision errors. At the current stage where the frequency of coil material replacement is low, this solution has become mature. However, the application scenarios of this mature solution are obviously limited. It is only applicable to coils and cannot be widely promoted to the cutting and processing of other types of products to be cut. It is difficult to meet diverse production needs.

[0051] Based on this, the embodiment of the present application provides a multi-cutting head cutting machine, which can improve the efficiency of contour cutting while realizing contour cutting with multiple cutting heads. It can be understood that the multi-cutting head cutting machine provided in the embodiment of the present application can also perform simple cutting. Please refer to Figure 1 , Figure 2 and Figure 3 The multi-cutting head cutting machine provided in the embodiment of the present application is introduced. The multi-cutting head cutting machine includes a cutting frame and a cutting platform 200, and the cutting platform 200 is located below the cutting frame. The cutting frame is equipped with multiple cutting heads for cutting the product to be cut, and the cutting platform 200 is used to place the product to be cut.

[0052] The cutting machine frame includes a crossbeam track 100, and a plurality of cutting heads are arranged in parallel on the crossbeam track 100, and each cutting head can move on the crossbeam track 100. In addition, each cutting head is also provided with a corresponding second-axis motor, and a second-axis motor drives the tool holder of the corresponding cutting head to move along the second axial direction. Among them, the crossbeam track 100 is parallel to the first axial direction, and the first axial direction and the second axial direction are perpendicular to each other. In one embodiment, the crossbeam track 100 can be arranged along the Y-axis, that is, along the first axial direction, and the second-axis motor can also drive the tool holder of the cutting head to move along the X-axis, that is, along the second axial direction, thereby realizing that each cutting head can move separately in the X-axis and the Y-axis. It can be understood that in another embodiment, the first axial direction can also be the X-axis direction, and the second axial direction can also be the Y-axis direction, which is not limited here and can be set according to actual needs.

[0053] Exemplarily, the multiple cutting heads include at least one fixed cutting head 120 and at least one adjustable cutting head 110. The fixed cutting head 120 is used to coordinate the product to be cut, and the knife seat position and cutting direction of the fixed cutting head 120 are fixed, while the knife seat position and cutting direction of the adjustable cutting head 110 are adjustable. In the embodiment of the present application, on the one hand, the fixed cutting head 120 is used to perform cutting positioning, and on the other hand, the adjustable cutting head 110 is used to perform flexible adjustment based on the cutting positioning of the fixed cutting head 120, thereby ensuring that the fixed cutting head 120 and the adjustable cutting head 110 perform asynchronous cutting and accurate positioning, thereby improving the efficiency and accuracy of contour cutting.

[0054] In this embodiment, a fixed cutting head 120 can be set, but the number of adjustable cutting heads 110 can be increased or decreased according to cutting requirements. For example, more adjustable cutting heads 110 can be set when there are many cutting surfaces, and fewer adjustable cutting heads 110 can be set when there are few cutting surfaces.

[0055] Exemplarily, the adjustable cutting head 110 may be configured to be detachably connected to the beam rail 100 to facilitate the flexible addition and removal of the adjustable cutting head 110 .

[0056] When controlling the adjustable cutting head 110, the adjusting component thereon can be used to control the blade holder of the adjustable cutting head 110 to move along the first axial direction, that is, along the y-axis direction. The movement of the blade holder of the adjustable cutting head 110 along the y-axis direction controlled by the adjusting component is parallel to but not coincident with the movement of the adjustable cutting head 110 along the Y-axis direction.

[0057] In some embodiments, each of the multiple cutting heads can move along the crossbeam track 100. Specifically, the crossbeam track 100 includes a crossbeam support structure and a cutting track, and the crossbeam support structure is used to support the cutting track so that the cutting track is fixedly arranged along the first axial direction and is located above the cutting platform 200. The above-mentioned multiple cutting heads are slidably connected on the cutting track, and the multiple cutting heads are arranged in parallel on the cutting track. Among them, there are many ways to set the sliding connection of multiple cutting heads, such as by setting a controller to respectively control the moving distance and position of each cutting head on the sliding track, and the relative position of each cutting head on the sliding track can also be moved manually. A groove that is engaged with the sliding track is correspondingly set on each cutting head to realize the sliding connection between each cutting head and the sliding track.

[0058] Of course, in some cases, the position of each cutting head on the cutting track can be fixed, and each cutting head can be detachably connected to the sliding track to facilitate the increase or decrease of the number of adjustable cutting heads 110. For example, by providing a through hole on the cutting track, each cutting head can be connected to the cutting track by bolts.

[0059] In some embodiments, the second-axis motor configured for each cutting head can be set at both ends of the track beam. Each second-axis motor is connected to each cutting head through a belt drive. The use of a belt drive connection can effectively buffer the impact force generated when the second-axis motor starts and stops, avoiding damage to the cutting head and related precision parts due to instantaneous impact, greatly extending the service life of the equipment; on the other hand, the belt drive has good flexibility and can adapt to a certain extent to the slight displacement deviation caused by factors such as material properties and cutting path changes during the cutting process, ensuring the smooth movement of the cutting head.

[0060] Each second-axis motor can be driven synchronously or asynchronously. When performing tasks that require extremely high cutting accuracy and consistency, such as batch cutting of precision products, the synchronous drive mode can be selected. The cutting head is driven along the crossbeam track 100 at exactly the same speed and acceleration to ensure that the motion trajectory of each cutting head in the second axis is highly consistent, effectively improving the quality stability of the product. In the face of some special cutting requirements, such as processing products to be cut with irregular shapes or spliced ​​with different materials, the asynchronous drive mode can be used. The controller can separately adjust the operating parameters of each second-axis motor in the second axis, so that the cutting head can flexibly adjust the moving speed, dwell time, etc. in the second axis according to the actual situation, to achieve differentiated cutting and better adapt to complex and changeable cutting tasks.

[0061] See also Figure 4 , Figure 5 and Figure 6The structure of the adjustable cutting head 110 is shown. In some embodiments, the adjustable cutting head 110 includes an adjustment component for controlling the knife holder on the adjustable cutting head 110 to move along the first axial direction. The adjustment component also includes a first axis motor 117, and the knife holder on the adjustable cutting head 110 is driven along the first axial direction by the first axis motor 117. Among them, one adjustment component is provided on one adjustable cutting head 110, and one first axis motor 117 is provided on one adjustment component, and each first axis motor 117 drives one knife holder to drive along the first axial direction.

[0062] In some embodiments, the adjustment component further includes a linear guide rail 115, and the knife seat on the adjustable cutting head 110 is arranged on the linear guide rail 115, and the linear guide rail 115 is arranged along the third axial direction, that is, along the Z-axis direction, wherein the third axial direction is perpendicular to the first axial direction and the second axial direction respectively. In this way, the knife seat on the adjustable cutting head 110 can move in the first axial direction (y-axis direction), the second axial direction (X-axis direction) and the third axial direction (Z-axis direction) respectively, and the knife seat of the adjustable cutting head 110 can be flexibly adjusted in various directions, so as to meet the cutting requirements of various products to be cut.

[0063] Exemplarily, the first axis motor 117 can be connected to the tool holder of the adjustable cutting head 110 through the trapezoidal lead screw 116. The first axis motor 117 drives the tool holder of the adjustable cutting head 110 to move in the first axis direction (y-axis direction). When the first axis motor 117 is running, the rotational power outputted by the first axis motor 117 can be accurately converted into a linear displacement of the tool holder along the y-axis direction.

[0064] In addition, the knife seat on the adjustable cutting head 110 can move along the linear guide rail 115 laid in the third axial direction (Z-axis direction). Among them, a third-axis motor 113 can also be provided on the adjustable cutting head 110, and the third-axis motor 113 drives the knife seat of the adjustable cutting head 110 to move along the linear guide rail 115. The friction force of the knife seat of the adjustable cutting head 110 sliding on the linear guide rail 115 is reduced, and the accuracy and stability of the movement of the knife seat of the adjustable cutting head 110 in the Z-axis direction are improved.

[0065] Furthermore, the linear guide 115 is arranged to work closely with the first axis motor 117 and the trapezoidal lead screw 116, forming a trinity, so that the tool holder can achieve all-round, high-precision, stable and reliable positioning and dynamic movement in three-dimensional space, and effectively meet the stringent requirements for tool holder position control in various complex graphic contour cutting scenarios.

[0066] Specifically, the adjustable cutting head 110 includes a cutting head drive plate 111, a motor holder 112 and a cutting tool holder 114 connected in sequence from top to bottom. The cutting head drive plate 111 is connected to the cutting track, the motor holder 112 is used to install or place the third axis motor 113 of the adjustable cutting head 110, and the cutting tool holder 114 is used to install or place the tool holder and the first axis motor 117 of the adjustable cutting head 110.

[0067] See also Figure 7 , Figure 8 and Fig. 9 The structure of the fixed cutting head 120 is provided. In some embodiments, an image acquisition device 125 is disposed below the fixed cutting head 120 , and the scanning direction of the image acquisition device 125 faces downward, that is, the scanning direction of the image acquisition device 125 is parallel to the third axis and faces the cutting platform 200 .

[0068] When a product to be cut is placed on the cutting platform 200, the camera in the image acquisition device 125 is directed toward the product to be cut to scan the product to be cut and obtain marking information of the product to be cut, thereby facilitating obtaining the coordinate position of the fixed cutting head 120 and the coordinate position of the marking information based on the marking information.

[0069] In some embodiments, the knife seat of the fixed cutting head 120 is driven by the third axis motor 123 along the third axis, that is, the knife seat of the fixed cutting head 120 can move in the Z axis direction. Among them, the knife seat of the fixed cutting head 120 can be set on a linear guide rail, and the linear guide rail is set along the third axis. Driven by the third axis motor 123, the knife seat on the fixed cutting head 120 can move along the linear guide rail laid along the third axis (Z axis direction).

[0070] In addition, the fixed cutting head 120 is also driven to move in the second axial direction (X-axis direction) by the second axis motor configured therein. The knife holder of the fixed cutting head 120 can be driven to move in the first axial direction and the second axial direction by the first axis motor and the second axis motor, thereby controlling whether the knife holder of the fixed cutting head 120 performs cutting, as well as the knife pressure and speed of cutting, and cutting the product to be cut.

[0071] In some embodiments, the fixed cutting head 120 includes a cutting head drive plate 121, a motor holder 122 and a camera bracket 126 connected in sequence from top to bottom, the cutting head drive plate 121 is connected to the beam rail 100, the motor holder 122 is used to install or place the third axis motor 123, and the camera bracket 126 is used to install or place the image acquisition device 125.

[0072] The fixed cutting head 120 further includes a cutting tool holder 124 . The cutting tool holder 124 is disposed between the motor holder 122 and the camera holder 126 . The cutting tool holder 124 is used to install a tool holder of the fixed cutting head 120 .

[0073] In some embodiments, the multi-cutting head cutting machine includes: a controller, the controller being communicatively connected to the image acquisition device 125 and the adjustable cutting head 110;

[0074] The image acquisition device 125 is used to scan the marking information of the product to be cut and send the marking information to the controller;

[0075] The controller is used to control the movement direction of the adjustable cutting head 110 according to the marking information.

[0076] In this embodiment, when performing contour cutting, a marking pattern may be printed on the product to be cut first, and then the marking pattern on the product to be cut may be acquired by the image acquisition device 125 to obtain marking information, and the marking information may be transmitted to the controller. The controller may be arranged on the fixed cutting head 120, the adjustable cutting head 110 or the beam support structure, and the specific arrangement position is not limited in this embodiment and may be arranged according to actual needs.

[0077] The controller can be equipped with an intelligent algorithm, which is based on image processing technology to identify, analyze and extract features of the collected marking information, and convert the marking information into coordinate data to locate the relative position of the fixed cutting head 120 and the marking image in the product to be cut, so as to construct the cutting path of the fixed cutting head 120 and the adjustable cutting head 110 according to the relative position, so as to asynchronously drive the fixed cutting head 120 and the adjustable cutting head 110 to cut the product to be cut, thereby improving the efficiency of contour cutting of the product to be cut.

[0078] For example, to ensure the accuracy of contour cutting, the intelligent algorithm also adopts strategies such as multi-point calibration and dynamic compensation. Among them, multi-point calibration refers to measuring and correcting multiple marking points from different angles and positions before cutting, eliminating errors introduced by factors such as the placement of the product to be cut and the image acquisition angle, making the initial coordinate positioning more accurate. The dynamic compensation mechanism monitors the deviation between the actual position of the cutting head and the preset path in real time during the cutting process. Once the deviation is detected, the adjustment amount is immediately calculated based on the preset compensation model and fed back to the controller to ensure that the cutting head always accurately cuts along the contour of the graphic.

[0079] The controller is also connected to the motors of each axis of the adjustable cutting head 110 to control the blade of the adjustable cutting head 110 to move in three-dimensional space through the motors of each axis, thereby accurately adjusting the position of the adjustable cutting head 110. This ensures that the cutting trajectory perfectly matches the contour of the graphic, achieves high-precision cutting, and meets the needs of fields with extremely high cutting accuracy requirements.

[0080] In some embodiments, a cutting platform 200 is disposed below the cutting frame and is used to place the product to be cut. The cutting platform 200 is driven along the first axis by a driving method, and the driving methods include roller type and platform type.

[0081] Among them, the roller-type cutting platform includes a cutting platform 200, and rollers arranged on both sides or around the bottom of the cutting platform 200, a matching transmission shaft and a power transmission device. The transmission shaft and the roller are connected by bearings to ensure that the roller rotates flexibly and smoothly, and the energy loss in the power transmission process is minimized. When the multi-cutting head cutting machine starts the cutting task, the torque output by the power source (such as a motor) is transmitted to the transmission shaft through a power transmission device such as a belt, chain or gear set, thereby driving the roller to rotate synchronously. The roller relies on the friction between the bottom track or support surface of the cutting platform 200 to push the cutting platform 200 along the first axial direction. The roller drive can smoothly push the cutting platform 200, ensure that the product to be cut is not affected by additional impact force during the cutting process, and ensure the flatness and accuracy of the cutting edge.

[0082] The platform-type cutting platform includes a cutting platform 200 and a linear module arranged at the bottom of the cutting platform 200. The linear module includes a slider, a guide rail and a drive motor. When the multi-cutting head cutting machine starts the cutting task, the power source (such as a motor) outputs power according to the instruction, driving the slider to slide quickly and smoothly along the guide rail, and the cutting platform 200 moves accordingly, so as to control the movement of the cutting platform 200 with extremely high positioning accuracy, and perform fine cutting on the product to be cut.

[0083] In summary, the multi-cutting head cutting machine provided in the embodiment of the present application can realize multi-point cutting of the product to be cut at the same time by arranging multiple cutting heads in parallel on the crossbeam track of the cutting machine frame. Compared with the traditional single-cutting head equipment, the overall cutting operation time is greatly shortened, especially in the face of large-scale production tasks or scenarios with high requirements for cutting timeliness, the cutting efficiency can be effectively improved. In addition, by setting a fixed cutting head and an adjustable cutting head, during the cutting process, when the product to be cut has a slight displacement or deformation, the fixed cutting head monitors the position of the knife seat in real time, quickly calculates the compensation amount based on the intelligent algorithm, and combines with the controller to coordinately control the knife seat of the adjustable cutting head to perform real-time dynamic calibration in the corresponding axis to ensure the accuracy of multi-cutting head cutting. Furthermore, the knife seats on the fixed cutting head and the adjustable cutting head are driven by the second axis motor configured by each of them along the second axis perpendicular to the first axis, so that the motion control of the cutting head in the two-dimensional plane is more refined, and it can accurately cut along the contour of complex graphics. The adjustment component of the adjustable cutting head can control the movement of the knife holder along the first axis. Even if the product to be cut cannot be absolutely parallel to the beam track (first axis), the cutting position can be adjusted dynamically in real time to ensure that each cutting head can accurately fit the contour of the graphic for cutting, meet the requirements of high-precision contour cutting, and effectively improve product quality. In addition, the fixed cutting head and the adjustable cutting head are each equipped with a third-axis motor, so that the knife holder can move along the third axis relying on the linear guide rail, so as to realize the flexible movement of the adjustable cutting head in three directions.

[0084] The multi-cutting head cutting machine provided in the embodiment of the present application is no longer limited to specific coil materials due to its combined design of a fixed cutting head and an adjustable cutting head. Whether it is a plate, a coil, or a material with an irregular surface or slight deformation, the flexible adaptation of the adjustable cutting head can ensure the smooth progress of the cutting process, greatly broadening the application field of the multi-cutting head cutting machine so that it can meet diversified cutting needs. The fixed cutting head can move freely in the X and Z axis directions. This multi-dimensional movement ability enables it to easily cope with materials of different thicknesses, hardnesses, and surface flatnesses. For example, when cutting thicker plates, the height of the Z-axis tool holder can be adjusted to accurately control the knife pressure to ensure that the tool smoothly cuts into the material without excessive extrusion and deformation; in the face of materials with uneven surfaces, the linkage adjustment of the X and Z axes is used to keep the tool holder in the best cutting posture at all times, adapt to the ups and downs of the material, and achieve smooth cutting.

[0085] Furthermore, the blade holders of each cutting head are independently driven and controlled, which reduces the impact of a single cutting head failure on the overall cutting operation and improves the stability of equipment operation. At the same time, the adjustment components of the adjustable cutting head can continue to function stably during long-term, high-intensity cutting work through the precise control of the controller, reducing the frequency of equipment maintenance and reducing production costs.

[0086] See also Fig.10 , Fig.10 The control method of the cutting machine provided in the embodiment of the present application is a flow chart of the control method of the cutting machine. The control method of the cutting machine is applied to the multi-cutting head cutting machine provided in the embodiment of the present application. The control method of the cutting machine includes the following steps:

[0087] S301, scanning the product to be cut placed on the cutting platform by an image acquisition device to obtain marking information of the product to be cut.

[0088] The image acquisition device is arranged on the fixed cutting head. The third axis motor on the fixed cutting head drives the knife holder to move in the third axis direction (Z axis direction) during the third axis movement.

[0089] When contour cutting is performed, a marking pattern is printed on the product to be cut. When the product to be cut is placed on the cutting platform, the image acquisition device faces the product to be cut, and the image of the product to be cut can be acquired by starting the image acquisition device to identify the image of the product to be cut and obtain the marking information therein.

[0090] The focal length of the image acquisition device can be electrically adjusted to meet the requirements of various cutting tasks. The image acquisition device can be a scanner, a camera, etc.

[0091] S302: Process the marking information through a controller to determine a first relative position between the fixed cutting head and the product to be cut.

[0092] The image acquisition device is communicatively connected to the controller. After the image acquisition device transmits the identified marking information to the controller, the controller can call its built-in intelligent algorithm to analyze and extract features of the marking information, and convert the marking information into coordinate data to locate the first relative position of the fixed cutting head and the marking graphic in the product to be cut.

[0093] Exemplarily, after receiving the marking information transmitted by the image acquisition device, the controller can first verify and preprocess the marking information to remove noise interference and improve data quality. Then, based on the built-in spatial coordinate algorithm and combined with the known cutting platform coordinate system, the first relative position of the fixed cutting head and the product to be cut is calculated. This intelligent algorithm takes into account factors such as the installation position, shooting angle, and lens distortion of the image acquisition device. Through three-dimensional reconstruction technology, the marking coordinates in the two-dimensional image are converted into three-dimensional coordinates in the actual space, and the initial position deviation of the fixed cutting head relative to the product to be cut in the X, Y, and Z axis directions is accurately determined, providing a reference for the subsequent precise movement of the cutting head.

[0094] S303: Determine a target cutting position of the adjustable cutting head according to the first relative position and the contour of the product to be cut.

[0095] After determining the first relative position between the fixed cutting head and the product to be cut, the controller further performs a comprehensive analysis based on the contour information of the product to be cut. The contour information to be cut can be graphic data pre-stored in the controller, or contour features extracted after deep processing of the captured image. Using a geometric calculation algorithm, the position of the fixed cutting head is matched with the contour to be cut, and the target cutting position that the adjustable cutting head needs to reach in order to achieve precise cutting in the current placement state of the product to be cut is analyzed.

[0096] For example, considering the possible tilt and deformation of the product to be cut on the cutting platform, the controller has a built-in compensation algorithm. By comparing the actual measured position of the fixed cutting head with the ideal cutting position, as well as the geometric features of the contour to be cut, the compensation displacement required by the adjustable cutting head in the X, Y, and Z axis directions is calculated to ensure that even under complex working conditions, the adjustable cutting head can accurately locate the target cutting position, laying the foundation for subsequent high-quality cutting.

[0097] S304, controlling the adjustable cutting head to adjust to the target cutting position and then cutting the product to be cut.

[0098] According to the target cutting position calculated by the controller, the first-axis motor, second-axis motor and third-axis motor of the adjustable cutting head work together. The first-axis motor drives the knife holder to move quickly and accurately in the Y-axis direction through the trapezoidal screw to adjust the lateral position of the knife holder; the second-axis motor drives the knife holder to move in the X-axis direction, and cooperates with the movement of the cutting platform to achieve precise control of the cutting path; the third-axis motor drives the knife holder to move in the Z-axis direction, adjusts the knife pressure, and ensures that the knife maintains a good contact state with the surface of the product to be cut.

[0099] When the adjustable cutting head reaches the target cutting position, the cutting program is started. During the cutting process, the controller continuously monitors the state of the cutting head, the moving speed of the cutting platform, and the cutting status of the product to be cut. In this way, the cutting position of the adjustable cutting head can be flexibly and accurately controlled during the cutting process, and the cutting of the product to be cut can be completed quickly.

[0100] For example, the controller can also collect cutting current, vibration and other parameters to determine the degree of tool wear, cutting resistance changes and other conditions in real time. When an abnormality is found, the cutting parameters are adjusted according to the collected parameters, such as reducing the cutting speed, increasing the knife pressure, etc., to ensure the stability and continuity of the cutting process. At the same time, according to the real-time collected data, the subsequent cutting path is optimized to improve cutting efficiency, reduce material waste, and ultimately achieve high-precision and high-efficiency cutting operations.

[0101] A displacement sensor can also be installed on the adjustable cutting head. The displacement sensor can be used to monitor the actual position of the tool holder in real time and transmit the feedback signal to the controller. The controller continuously corrects the drive signal of each axis motor on the adjustable cutting head through a closed-loop control algorithm to ensure that the tool holder accurately reaches the target cutting position and the error is controlled within a very small range.

[0102] In some embodiments, step S303 includes:

[0103] Determining a third relative position of the adjustable cutting head and the product to be cut according to the first relative position and the second relative position of the fixed cutting head and the adjustable cutting head;

[0104] The target cutting position of the adjustable cutting head is determined according to the third relative position and the contour of the product to be cut.

[0105] In this embodiment, the controller further obtains the second relative position of the fixed cutting head and the adjustable cutting head based on the first relative position of the known fixed cutting head and the product to be cut. When the positions of the fixed cutting head and the adjustable cutting head can be adjusted by sliding on the beam track, the second relative position can be obtained by the displacement sensors installed on the fixed cutting head and the adjustable cutting head, and the second relative position can also be obtained by the displacement sensor array installed on the cutting frame. The displacement sensor monitors the relative position data such as the spacing and angle of the two cutting heads in the X, Y, and Z axis directions in real time, and transmits the position data to the controller. When the relative positions of the fixed cutting head and the adjustable cutting head on the beam track are fixed, the controller can directly call the second relative position of the fixed cutting head and the adjustable cutting head.

[0106] According to the first relative position and the second relative position, the controller calculates a third relative position between the adjustable cutting head and the product to be cut by using vector operations and space transformation algorithms.

[0107] For example, the motion state of the cutting platform, possible deformation of the product to be cut, and the kinematic characteristics of the fixed cutting head and the adjustable cutting head can also be considered, and multiple factors can be integrated into the calculation model to ensure the accuracy of the third relative position. For example, when the cutting platform is slightly tilted, the real-time relative position deviation of the adjustable cutting head relative to the product to be cut can be accurately obtained by dynamically correcting the first and second relative positions.

[0108] After obtaining the third relative position, the controller determines the target cutting position of the adjustable cutting head in combination with the contour information of the product to be cut. The contour information to be cut can be graphic data pre-stored in the controller, or contour features extracted by deep processing of the captured image. Using the geometric calculation algorithm, the third relative position is matched with the contour to be cut, and the target cutting position that the adjustable cutting head needs to achieve in order to achieve precise cutting is accurately analyzed, including specific coordinates, angles and other parameters in the X, Y, and Z axis directions, laying the foundation for subsequent high-quality cutting.

[0109] In some embodiments, step S304 includes:

[0110] Generate control instructions to the motors of each axis of the adjustable cutting head according to the target cutting position, so as to drive the knife holder of the adjustable cutting head to adjust to the target cutting position;

[0111] The asynchronously driven adjustable cutting head and the fixed cutting head cut the product to be cut according to the contour to be cut.

[0112] In this embodiment, the controller generates precise control instructions using a built-in motion control algorithm based on the target cutting position of the adjustable cutting head. These control instructions are customized for the first axis motor, the second axis motor, and the third axis motor of the adjustable cutting head, respectively, and specify the parameters such as the start time, speed, direction, and running time of each axis motor to ensure that the knife seat can be accurately and quickly adjusted to the target cutting position. The control instructions can be transmitted to the corresponding motor drivers of each axis through the digital I / O interface of the controller with a high-speed and reliable communication protocol. The driver converts the received instructions into electrical signals that the motor can recognize and drives the motors of each axis to operate.

[0113] When starting the cutting program, the controller uses an asynchronous drive strategy to control the adjustable cutting head and the fixed cutting head respectively. For the fixed cutting head, according to the pre-set cutting path planning and the coordination scheme with the adjustable cutting head, the controller sends corresponding control instructions to the associated axis motors (such as the second axis motor drives the knife holder to move along the X axis, and the third axis motor drives the knife holder to move along the Z axis), so that it starts cutting according to the cutting contour.

[0114] At the same time, after the adjustable cutting head receives the control command from the controller, the motors of each axis of the adjustable cutting head respond to the control command and control the knife holder to quickly adjust according to the target cutting position. Cutting is performed after reaching the target cutting position. The adjustable cutting head can use its multi-axis flexible adjustment characteristics to accurately fit the complex contour for cutting in irregular areas of the product to be cut due to material deformation, tilted placement, etc. During the entire cutting process, the controller monitors the working status of the fixed cutting head and the adjustable cutting head in real time, and dynamically adjusts the asynchronous drive parameters according to factors such as material characteristics and cutting progress to ensure that the two work together efficiently, which not only ensures cutting accuracy but also improves overall cutting efficiency.

[0115] In the above embodiments, the description of each embodiment has its own emphasis. For the part that is not described in detail in a certain embodiment, please refer to the detailed description of the multi-cutting head cutting machine above, which will not be repeated here.

[0116] The control method of the cutting machine provided in the embodiment of the present application belongs to the same concept as the multi-cutting head cutting machine in the above embodiment. Its specific implementation method is detailed in the multi-cutting head cutting machine embodiment, which will not be repeated here.

[0117] It should be noted that, for the control method of the cutting machine in the embodiment of the present application, ordinary technicians in this field can understand that all or part of the process of implementing the control method of the cutting machine in the embodiment of the present application can be completed by controlling the relevant hardware through a computer program, and the computer program can be stored in a computer-readable storage medium, such as stored in a memory, and executed by at least one processor, and the execution process may include the process of the embodiment of the control method of the cutting machine. Among them, the computer-readable storage medium can be a disk, an optical disk, a read-only memory (ROM), a random access memory (RAM), etc.

[0118] The computer program may be called and executed by a processor, and the processor may be integrated in the controller of the multi-cutting head cutting machine, and the computer-readable storage medium may also be integrated in the controller.

[0119] The multi-cutting head cutting machine and control method provided in the embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for technical personnel in this field, according to the ideas of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A multi-cutting head cutting machine, characterized in that: The multi-cutting head cutting machine comprises: A cutting frame, the cutting frame comprising a beam track arranged along a first axial direction, a plurality of cutting heads arranged in parallel on the beam track, a knife seat on each cutting head being driven along a second axial direction by a second axis motor configured respectively, the first axial direction being perpendicular to the second axial direction; The plurality of cutting heads include at least one fixed cutting head and at least one adjustable cutting head; The adjustable cutting head comprises an adjusting component, and the adjusting component is used to control the movement of the blade holder on the adjustable cutting head along a first axial direction.

2. The multi-cutting head cutting machine according to claim 1, characterized in that: The adjustment component comprises: A first axis motor, wherein the knife seat on the adjustable cutting head is driven along a first axial direction by the first axis motor.

3. The multi-cutting head cutting machine according to claim 2, characterized in that: The adjustment component also includes: A linear guide rail, the knife seat on the adjustable cutting head is arranged on the linear guide rail, and the linear guide rail is arranged along a third axial direction, and the third axial direction is respectively perpendicular to the first axial direction and the second axial direction.

4. The multi-cutting head cutting machine according to claim 1, characterized in that: An image acquisition device is disposed below the fixed cutting head. The scanning direction of the image acquisition device is parallel to a third axial direction, and the third axial direction is respectively perpendicular to the first axial direction and the second axial direction.

5. The multi-cutting head cutting machine according to claim 4, characterized in that: The fixed cutting head includes a cutting head drive plate, a motor holder and a camera bracket connected in sequence from top to bottom, the cutting head drive plate is connected to the beam track, the motor holder is used to place the third axis motor, and the camera bracket is used to place the image acquisition device.

6. The multi-cutting head cutting machine according to claim 4, characterized in that: The multi-cutting head cutting machine comprises: a controller, the controller being communicatively connected with the image acquisition device and the adjustable cutting head respectively; The image acquisition device is used to scan the marking information of the product to be cut and send the marking information to the controller; The controller is used to control the movement direction of the adjustable cutting head according to the marking information.

7. The multi-cutting head cutting machine according to any one of claims 1 to 6, characterized in that: The multi-cutting head cutting machine comprises a cutting platform, which is placed below the cutting frame and is used for placing products to be cut.

8. A cutting machine control method, characterized in that: The control method of the cutting machine is applied to the multi-cutting head cutting machine according to any one of claims 1 to 7, and the control method of the cutting machine includes: Scanning the product to be cut placed on the cutting platform by an image acquisition device to obtain marking information of the product to be cut; Processing the marking information by a controller to determine a first relative position between the fixed cutting head and the product to be cut; Determining a target cutting position of the adjustable cutting head according to the first relative position and the to-be-cut contour of the to-be-cut product; The adjustable cutting head is controlled to be adjusted to the target cutting position to cut the product to be cut.

9. The control method of the cutting machine according to claim 8, characterized in that: Determining the target cutting position of the adjustable cutting head according to the first relative position and the to-be-cut contour of the to-be-cut product includes: Determining a third relative position between the adjustable cutting head and the product to be cut according to the first relative position and the second relative position between the fixed cutting head and the adjustable cutting head; The target cutting position of the adjustable cutting head is determined according to the third relative position and the contour of the product to be cut.

10. The control method of the cutting machine according to claim 8, characterized in that: The controlling the adjustable cutting head to adjust to the target cutting position to cut the product to be cut comprises: Generate a control instruction to each axis motor of the adjustable cutting head according to the target cutting position, so as to drive the blade holder of the adjustable cutting head to adjust to the target cutting position; The adjustable cutting head and the fixed cutting head are driven asynchronously to cut the product to be cut according to the contour to be cut.

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