A sheet cutting and sorting system and method

Abstract

The present disclosure provides a plate cutting and sorting system and method, the system comprising: a control computer, at least two straight bar cutting machines, a sorting gantry device and a workpiece conveying track; wherein the control computer is electrically connected with the straight bar cutting machines, and is used to send a cutting standard file to the straight bar cutting machines; the straight bar cutting machines are used to cut a plate to be cut according to the received cutting standard file to obtain at least one workpiece; the sorting gantry device is fixed above the at least two straight bar cutting machines, and is electrically connected with the control computer, and is used to receive position information of each workpiece sent by the control computer, pick up the workpieces according to the position information of each workpiece, and place the picked workpieces to the workpiece conveying track; the workpiece conveying track is arranged below the sorting gantry device, and is used to transport the workpieces to a designated position for assembly. The cutting efficiency and safety are improved in the embodiment of the present disclosure.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of material processing technology, in particular to a plate cutting and sorting system and method. BACKGROUND

[0002] Steel structure is a structure composed of steel materials, and is one of the main building structure types. The structure is mainly composed of members such as steel beams, steel columns, steel trusses, etc. made of profiled steel and steel plates.

[0003] At present, the straight strip plates used in the welding parts of the steel structure are all manually loaded in a manual mode, which not only affects the cutting efficiency but also is unsafe. SUMMARY

[0004] The present disclosure provides a plate cutting and sorting system and method to improve cutting efficiency and safety.

[0005] In a first aspect, the present disclosure provides a plate cutting and sorting system, comprising a control computer, at least two straight strip cutting machines, a sorting truss device, and a workpiece conveying track.

[0006] The control computer is electrically connected with the straight strip cutting machines and is configured to send a cutting standard file to the straight strip cutting machines.

[0007] The straight strip cutting machines are configured to cut the to-be-cut plate according to the received cutting standard file to obtain at least one workpiece.

[0008] The sorting truss device is fixed above the at least two straight strip cutting machines and is electrically connected with the control computer, and is configured to receive the position information of each workpiece sent by the control computer, pick up the workpieces according to the position information of each workpiece, and place the picked-up workpieces on the workpiece conveying track.

[0009] The workpiece conveying track is arranged below the sorting truss device and is configured to convey the workpieces to a designated position for assembly.

[0010] Optionally, the sorting truss device comprises at least a truss track and a lifting tool for picking up the workpieces; the lifting tool slides back and forth along the horizontal direction on the truss track, and the lifting tool is an electromagnetic lifting tool or a pneumatic lifting tool.

[0011] Optionally, the workpiece conveying track is any one of a plate chain conveying track, a belt conveying track, and a roller conveying track.

[0012] Optionally, a buffer station is arranged between any two straight strip cutting machines, and a buffer station is arranged between the workpiece conveying track and the straight strip cutting machine adjacent to the conveying track; the buffer station is configured to place the workpieces when the workpiece conveying track is in a busy state.

[0013] Optionally, the plate cutting and sorting system further comprises a feeding crane and at least one plate storage position.

[0014] The plate storage position is configured to store the plate to be cut.

[0015] The feeding crane is configured to obtain the plate to be cut from the plate storage position and transport the plate to be cut to the designated straight-line cutting machine.

[0016] Optionally, the plate cutting and sorting system further comprises a waste placement station configured to store the waste generated by the straight-line cutting machine during cutting of the plate.

[0017] Optionally, the straight-line cutting machine is any one of a flame cutting machine, a plasma cutting machine, and a laser cutting machine.

[0018] In a second aspect, the present disclosure provides a plate cutting and sorting method applied to a control computer in a plate cutting and sorting system, the plate cutting and sorting system further comprising at least two straight-line cutting machines, a sorting gantry device, a workpiece conveying track, and a buffer station, the method comprising:

[0019] After the plate to be cut is placed on the target straight-line cutting machine, a plate ready instruction and a cutting standard file are sent to the target straight-line cutting machine, so that the target straight-line cutting machine cuts the plate to be cut according to the plate ready instruction and the cutting standard file to obtain at least one workpiece and determine the position information of each workpiece.

[0020] The position information of each workpiece is obtained and sent to the sorting gantry device, so that the sorting gantry device picks up the workpiece according to the position information of the workpiece and places the picked workpiece on the workpiece conveying track or different buffer stations according to the state of the workpiece conveying track and / or the state of the straight-line cutting machine adjacent to the target straight-line cutting machine.

[0021] Optionally, the process of determining the position information of each workpiece by the target straight-line cutting machine comprises:

[0022] The target straight-line cutting machine automatically identifies the reference position of the plate to be cut before cutting the plate to be cut, wherein the reference position is the position of at least one vertex of the plate to be cut.

[0023] The target straight-line cutting machine determines the position information of each workpiece according to the reference position, the cutting position set in the cutting standard file, and the size of the workpiece after completing the cutting of the plate to be cut.

[0024] Optionally, after placing the picked workpiece in different buffer stations, the method further comprises:

[0025] According to the determined state of the target straight-line cutting machine and the state of the straight-line cutting machine adjacent to the target straight-line cutting machine, the sorting gantry device is instructed to place the workpiece stored in the buffer station onto the workpiece conveying track.

[0026] In the present disclosure, the straight-line cutting machine automatically cuts the sheet material according to a standard file, saving the labor input, and the sorting gantry device automatically identifies and picks the cut workpiece, while the sorting gantry device transports the picked workpiece to the workpiece conveying track so that the workpiece conveying track transports the workpiece to the designated position for assembly. Thus, by automatically picking and transporting the workpiece through the sorting gantry device, the risk of picking and transporting the workpiece by manual means is avoided, the dangerous action is automated, the risk of injury is reduced, the wrong workpiece can be avoided, the efficiency of picking and transporting the workpiece is improved, and the cutting machine can quickly cut the next sheet material, thereby improving the cutting efficiency of the cutting machine. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a structural schematic diagram of a sheet material cutting and sorting system in a first embodiment of the present disclosure;

[0028] Figure 2 is a structural schematic diagram of a sheet material cutting and sorting system in a second embodiment of the present disclosure;

[0029] Figure 3 is a flowchart of a sheet material cutting and sorting method in a third embodiment of the present disclosure. DETAILED DESCRIPTION

[0030] The present disclosure will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely intended to explain the present disclosure, but not to limit the present disclosure. In addition, it should be noted that only parts related to the present disclosure are shown in the drawings for ease of description.

[0031] Sheet material is a flat rectangular building material plate made to a standard size, which is applied to the construction industry to make components for walls, ceilings or floors. It also refers to a metal plate forged, rolled or cast. In the embodiments of the present disclosure, the sheet material mainly refers to a metal plate, such as a steel plate.

[0032] Figure 1 is a structural diagram of a sheet material cutting and sorting system provided by the first embodiment of the present disclosure, which includes a control computer 1, a sorting gantry device 2, a workpiece conveying track 3, and at least two straight-line cutting machines. In the embodiments of the present disclosure, the sheet material cutting and sorting system includes two straight-line cutting machines as an example for description, i.e., referring to Figure 1The plate cutting and sorting system comprises a straight bar cutting machine 4 and a straight bar cutting machine 5. It should be noted that the straight bar cutting machine in the embodiment of the present disclosure can be any one of a flame cutting machine, a plasma cutting machine and a laser cutting machine.

[0033] In the embodiment of the present disclosure, the control computer 1 is electrically connected with the straight bar cutting machine 4 and the straight bar cutting machine 5, that is, the control computer 1 can be in communication connection with the straight bar cutting machine 4 and the straight bar cutting machine 5. Specifically, the control computer 1 is configured to send a plate ready instruction to a target straight bar cutting machine (which can be any one of the straight bar cutting machine 4 and the straight bar cutting machine 5) after the plate to be cut is placed on the target straight bar cutting machine, to inform the target straight bar cutting machine that the plate to be cut is ready, and then send a cutting standard file to the target straight bar cutting machine, wherein the cutting standard file gives the size of the plate to be cut, the cutting position and the size of the workpiece.

[0034] In the embodiment of the present disclosure, the target straight bar cutting machine is mainly configured to cut the plate to be cut according to the received cutting standard file to obtain at least one workpiece, determine the position information of each workpiece, and feed back the position information of each workpiece to the control computer. It should be noted that each straight bar cutting machine corresponds to a cutting machine control system, and the cutting machine control system communicates with the control computer, that is, the control computer sends the plate ready instruction and the cutting standard file to the cutting machine control system, so that the cutting machine control system controls the corresponding straight bar cutting machine to perform the operation of cutting the plate.

[0035] In the embodiment of the present disclosure, after the target straight bar cutting machine cuts the plate to be cut to obtain a plurality of workpieces, the operation of determining the position information of each workpiece is as follows: the target straight bar cutting machine automatically identifies the reference position of the plate to be cut on the target straight bar cutting machine before cutting the plate to be cut; wherein the reference position is the position of at least one vertex of the plate to be cut; optionally, the reference position is determined by using a sensor provided in the straight bar cutting machine. Therefore, after the target straight bar cutting machine completes the cutting of the plate to be cut, the position information of each workpiece is determined according to the reference position, the cutting position and the size of the workpiece set in the cutting standard file, wherein the position information is actually a relative position, that is, a position relative to the reference position.

[0036] The target straight bar cutting machine feeds the position information of the workpiece to the control computer 1, so that the control computer 1 sends the obtained position information of the workpiece to the sorting gantry device 2, so that the sorting gantry device 2 picks the workpiece according to the position information of the workpiece. In the embodiment of the present disclosure, the sorting gantry device 2 is fixed above at least two straight bar cutting machines and is electrically connected with the control computer 1, for receiving the position information of each workpiece sent by the control computer 1, picking the workpiece according to the position information of each workpiece, and placing the picked workpiece on the workpiece conveying track 3. In an alternative embodiment, the sorting gantry device 2 at least includes a gantry track 21 and a lifting tool 22 for picking the workpiece; wherein the lifting tool 22 reciprocally slides on the gantry track 21 in the horizontal direction, that is, the lifting tool 22 with the picked workpiece reciprocally slides on the gantry track 21 to transport the workpiece to the workpiece conveying track 3. In the embodiment of the present disclosure, the lifting tool 22 can be an electromagnetic lifting tool or a pneumatic lifting tool, or other forms of lifting tools, which are not limited here.

[0037] In the embodiment of the present disclosure, in order to ensure that the lifting tool 22 can accurately place the workpiece on the workpiece conveying track 3, the workpiece conveying track 3 is optionally arranged below the sorting gantry device 2, which mainly functions to transport the workpiece to a designated position for assembly. For example, the workpiece is transported as a material to a welding assembly line for welding to obtain the required steel structure. It should be noted that the workpiece conveying track 3 can be any one of a plate chain conveying track, a belt conveying track and a roller conveying track, which are not limited here.

[0038] In the present disclosure, the straight bar cutting machine automatically cuts the plate according to the standard file, saving the labor input, and the sorting gantry device automatically identifies and picks the cut workpiece, and simultaneously transports the picked workpiece to the workpiece conveying track, so that the workpiece conveying track transports the workpiece to a designated position for assembly. Thus, the sorting gantry device automatically picks and transports the workpiece, avoiding picking and transporting the workpiece by manual means, so that the dangerous operation is automated, the risk of injury is reduced, the wrong workpiece can be avoided, the efficiency of picking and transporting the workpiece is improved, and the cutting machine can quickly cut the next plate, thereby improving the cutting efficiency of the cutting machine.

[0039] Figure 2is a structural diagram of a plate cutting and sorting system provided by a second embodiment of the present disclosure. In addition to including a control computer 1, a sorting gantry device 2, a workpiece conveying track 3, and at least two straight strip cutting machines (for example, straight strip cutting machine 4 and straight strip cutting machine 5), the plate cutting and sorting system also includes a feeding crane 6 and at least one plate storage position 7. The plate storage position 7 is used to store a plate to be cut. The feeding crane 6 is used to obtain the plate to be cut from the plate storage position 7 and transport the plate to be cut to a designated straight strip cutting machine, so as to cut the plate and transport the workpiece. For details, refer to the above embodiments, which will not be described here.

[0040] Further, in the plate cutting and sorting system, a buffer station is arranged between any two straight strip cutting machines, for example, a buffer station 8-1 between the straight strip cutting machine 4 and the straight strip cutting machine 5. A buffer station is arranged between the workpiece conveying track and the straight strip cutting machine adjacent to the workpiece conveying track, for example, a buffer station 8-2 between the straight strip cutting machine 5 and the workpiece conveying track 3. In the embodiment of the present disclosure, the buffer station is used to temporarily place the workpiece when the workpiece conveying track 3 is in a busy state. That is, after the workpiece conveying track 3 is full of workpieces, the sorting gantry device 2 can place the picked workpiece on the buffer station first, and then transport the workpiece from the buffer station to the workpiece conveying track 3 when the workpiece conveying track 3 is in an idle state.

[0041] Further, the plate cutting and sorting system is also provided with a waste placement station 9 for storing the waste generated by the straight strip cutting machine each time the plate is cut.

[0042] In the plate cutting and sorting system in the embodiment of the present disclosure, in order to ensure the rational use of the factory building, a logistics channel is reserved between the plate storage position and the straight strip cutting machine, so that a forklift or the like can pass through. In addition, a reserved area is arranged in the factory building for subsequent use according to actual needs.

[0043] Figure 3 is a flowchart of a plate cutting and sorting method of a third embodiment of the present disclosure. The method is applied to a control computer in a plate cutting and sorting system, and the plate cutting and sorting system also includes at least two straight strip cutting machines, a sorting gantry device, a workpiece conveying track, and a buffer station. For details, refer to the above embodiments, which will not be described here. As shown in the figure, the plate cutting and sorting method specifically includes the following processes:

[0044] S101, after the plate to be cut is placed on the target straight strip cutting machine, a plate ready instruction and a cutting standard file are sent to the target straight strip cutting machine, so that the target straight strip cutting machine cuts the plate to be cut according to the plate ready instruction and the cutting standard file, obtains at least one workpiece, and determines the position information of each workpiece.

[0045] In the embodiments of the present disclosure, the target straight strip cutting machine can be any straight strip cutting machine of a plate cutting and sorting system, and a control computer in the plate cutting and sorting system can be in communication connection with the target straight strip cutting machine. Specifically, after the plate to be cut is placed on the target straight strip cutting machine, the control computer sends a plate ready instruction to the target straight strip cutting machine to inform the target straight strip cutting machine that the plate to be cut is ready, and then sends a cutting standard file to the target straight strip cutting machine, wherein the cutting standard file gives the size of the plate to be cut, the cutting position, and the size of the workpiece, etc.

[0046] In the embodiments of the present disclosure, the target straight strip cutting machine is mainly used to cut the plate to be cut according to the received cutting standard file to obtain at least one workpiece, and determine the position information of each workpiece and feed back the position information of each workpiece to the control computer.

[0047] In an alternative embodiment, the target straight strip cutting machine determines the position information of each workpiece as follows: the target straight strip cutting machine automatically identifies the reference position of the plate to be cut on the target straight strip cutting machine before cutting the plate to be cut; wherein the reference position is the position of at least one vertex of the plate to be cut; optionally, the sensor built-in the straight strip cutting machine is used to determine. Thus, after the target straight strip cutting machine completes the cutting of the plate to be cut, the position information of each workpiece is determined according to the reference position, the cutting position and the size of the workpiece set in the cutting standard file, and the position information here actually belongs to the relative position, that is, the position relative to the reference position.

[0048] S102, acquire the position information of each workpiece, and send the position information to the sorting gantry device, so that the sorting gantry device picks up the workpiece according to the position information of the workpiece, and places the picked workpiece to the workpiece conveying track or different buffer stations according to the state of the workpiece conveying track and / or the state of the straight strip cutting machine adjacent to the target straight strip cutting machine.

[0049] In the embodiments of the present disclosure, since the target straight strip cutting machine automatically identifies the position of each workpiece, the control computer can directly acquire the position of each workpiece from the target straight strip cutting machine. In addition, the target straight strip cutting machine can also actively feed back the position information of each workpiece to the control computer.

[0050] After the position information of each workpiece is calculated, the position information of each workpiece can be sent to the sorting gantry device, for example, to the control system of the sorting gantry device, so that the sorting gantry device picks up the workpiece according to the position information of the workpiece. After the sorting gantry device picks up a workpiece, the picked workpiece needs to be placed on the workpiece conveying track or a different buffer station according to the state of the workpiece conveying track and / or the state of the straight strip cutting machine adjacent to the target straight strip cutting machine, wherein the state of the workpiece conveying track and / or the state of the straight strip cutting machine adjacent to the target straight strip cutting machine is determined by the control computer and fed back to the sorting gantry device, and the state mainly includes busy state and idle state.

[0051] Further, if the workpiece is placed in the buffer station, the control computer instructs the sorting gantry device to place the workpiece stored in the buffer station on the workpiece conveying track according to the determined state of the target straight strip cutting machine and the state of the straight strip cutting machine adjacent to the target straight strip cutting machine.

[0052] To illustrate the specific process of the plate cutting and sorting method in detail, taking the plate cutting and sorting system in Figure 2 The plate cutting and sorting system includes straight strip cutting machine 4 and straight strip cutting machine 5. Now, the process of the plate cutting and sorting method will be described respectively for straight strip cutting machine 4 and straight strip cutting machine 5.

[0053] For straight strip cutting machine 4, the cutting and sorting process is as follows:

[0054] The feeding crane 6 obtains the to-be-cut plate from the plate storage position 7 and places the to-be-cut plate on the straight strip cutting machine 4. After confirming that the to-be-cut plate is in place, the control computer 1 sends the plate in place instruction and the cutting standard file to the straight strip cutting machine 4, and then the straight strip cutting machine 4 performs the plate cutting operation according to the plate in place instruction and the cutting standard file. Specifically, the straight strip cutting machine 4 first identifies the reference position of the to-be-cut plate on the target straight strip cutting machine; wherein the reference position is the position of at least one vertex of the to-be-cut plate; optionally, the reference position is determined by using the sensor in the straight strip cutting machine. Then, the cutting is performed according to the cutting standard file, and after the cutting of the to-be-cut plate is completed, the position information of each workpiece is determined according to the reference position and the cutting position and the workpiece size set in the cutting standard file, and the position information of each workpiece is fed back to the control computer 1, so that the control computer 1 sends the position information of each workpiece to the sorting gantry device 2.

[0055] After obtaining the position information of each workpiece, the sorting gantry device 2 starts to sort the workpieces, and after picking up a workpiece, obtains the state of the workpiece conveying track 3 and the state of the straight-line cutting machine 5 (i.e., the straight-line cutting machine adjacent to the straight-line cutting machine 4) from the control computer 1, and then places the picked workpiece on the workpiece conveying track or different buffer stations according to the state of the workpiece conveying track 3 and the state of the straight-line cutting machine 5.

[0056] Specifically, if the workpiece conveying track 3 is in an idle state and the straight-line cutting machine 5 is in a busy state (e.g., cutting a plate), the picked workpiece is transported to the workpiece conveying track 3. If the workpiece conveying track 3 is in a busy state (e.g., the workpiece conveying track 3 is full of workpieces), the picked workpiece cannot be placed in the workpiece conveying track 3, but should be placed in a buffer station. Since there are two buffer stations (i.e., buffer station 8-1 and buffer station 8-2), it is necessary to determine which buffer station to place according to the state of the straight-line cutting machine 5. Specifically, if the straight-line cutting machine 5 is in an idle state (e.g., the loading crane is transporting a to-be-cut plate to the straight-line cutting machine), in order to avoid collision between the sorting gantry device and the loading crane, and to ensure the safety of personnel beside the straight-line cutting machine 5, the picked workpiece is placed in the buffer station 8-1. If the straight-line cutting machine 5 is in a busy state, at this time the loading crane has placed a plate for the straight-line cutting machine 5, and the lifting tool on the sorting gantry device 2 with the workpiece will not collide with the crane when passing through the straight-line cutting machine 5, so the picked workpiece can be placed in the buffer station 8-2.

[0057] Further, for the workpiece placed in the buffer station, the sorting gantry device 2 places the workpiece stored in the buffer station on the workpiece conveying track 3 according to the state of the straight-line cutting machine 4 and the state of the straight-line cutting machine 5 fed back by the control computer 1. Specifically, if the straight-line cutting machine 4 and the straight-line cutting machine 5 are both in a busy state, the workpiece in the buffer station 8-2 can be placed on the workpiece conveying track 3; if the straight-line cutting machine 4 is idle and the straight-line cutting machine 5 is busy, the workpiece in the buffer station 8-1 is placed on the workpiece conveying track 3.

[0058] For the straight-line cutting machine 5, the cutting and sorting process is as follows:

[0059] The loading crane 6 obtains the to-be-cut plate from the plate warehouse 7 and places the to-be-cut plate on the straight bar cutting machine 5. After confirming that the to-be-cut plate is in place, the control computer 1 sends the plate in-place instruction and the cutting standard file to the straight bar cutting machine 5, and then the straight bar cutting machine 5 performs the plate cutting operation according to the plate in-place instruction and the cutting standard file. Specifically, the straight bar cutting machine 5 first identifies the reference position of the to-be-cut plate on the target straight bar cutting machine. The reference position is the position of at least one vertex of the to-be-cut plate. Optionally, the reference position is determined by using the sensor in the straight bar cutting machine. Then, the cutting is performed according to the cutting standard file, and after the cutting of the to-be-cut plate is completed, the position information of each workpiece is determined according to the reference position and the cutting position and the workpiece size set in the cutting standard file, and the position information of each workpiece is fed back to the control computer 1, so that the control computer 1 sends the position information of each workpiece to the sorting gantry device 2.

[0060] After obtaining the position information of each workpiece, the sorting gantry device 2 starts to sort the workpieces, and after picking up a workpiece, obtains the state of the workpiece conveying track 3 from the control computer 1, and then places the picked workpiece on the workpiece conveying track 3 or the buffer station 8-2 according to the state of the workpiece conveying track 3.

[0061] Specifically, if the workpiece conveying track 3 is in an idle state, the picked workpiece is placed on the workpiece conveying track 3; if the workpiece conveying track 3 is in a busy state, the picked workpiece is placed on the buffer station 8-2.

[0062] In the present disclosure, based on the plate cutting and sorting system, the plate is automatically cut and the workpiece is automatically picked up and transported, which avoids picking up and transporting the workpiece by manual means, so that dangerous actions are automated, the risk of injury is reduced, the wrong workpiece can be avoided, the efficiency of picking up and transporting the workpiece is improved, and the cutting machine can quickly cut the next plate, thereby improving the cutting efficiency.

[0063] Note that the above is only a preferred embodiment of the present disclosure and the technical principle applied. Those skilled in the art will understand that the present disclosure is not limited to the specific embodiments herein, and those skilled in the art can make various obvious changes, readjustments and substitutions without departing from the protection scope of the present disclosure. Therefore, although the present disclosure has been described in more detail through the above embodiments, the present disclosure is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present disclosure, and the scope of the present disclosure is determined by the scope of the appended claims.

Claims

1. A board cutting and sorting system, characterized in that, The system comprises a control computer, at least two straight-line cutting machines, a sorting gantry device and a workpiece conveying track; The control computer is electrically connected with the straight-line cutting machines, and is configured to send a cutting standard file to the straight-line cutting machines, the cutting standard file comprising the size of a to-be-cut plate, the cutting position and the size of a workpiece; The straight-line cutting machines are configured to cut the to-be-cut plate according to the received cutting standard file to obtain at least one workpiece; The sorting gantry device is fixed above the at least two straight-line cutting machines, and is electrically connected with the control computer, and is configured to receive the position information of each workpiece sent by the control computer, pick up the workpieces according to the position information of each workpiece, and place the picked-up workpieces on the workpiece conveying track; The workpiece conveying track is arranged below the sorting gantry device, and is configured to convey the workpieces to a designated position for assembly; A buffer station is arranged between any two straight-line cutting machines, and a buffer station is arranged between the workpiece conveying track and a straight-line cutting machine adjacent to the workpiece conveying track; the buffer station is configured to place the workpieces when the workpiece conveying track is in a busy state; The at least two straight-line cutting machines each correspond to a cutting machine control system, the cutting machine control system is electrically connected with the control computer, and is configured to receive a plate readiness instruction and the cutting standard file sent by the control computer; The straight-line cutting machines further comprise the following steps before the sorting gantry device receives the position information of each workpiece sent by the control computer: The target straight-line cutting machine is configured to automatically identify a reference position of the to-be-cut plate before cutting the to-be-cut plate; the reference position is the position of at least one vertex of the to-be-cut plate; The target straight-line cutting machine is configured to determine the position information of each workpiece according to the reference position, the cutting position and the size of the workpiece set in the cutting standard file after completing the cutting of the to-be-cut plate; the position information is a relative position, i.e., a position relative to the reference position; The sorting gantry device further comprises the following steps after picking up the workpieces according to the position information of each workpiece: If the workpiece conveying track is in an idle state and the straight-line cutting machine is in a busy state, the sorting gantry device is configured to directly convey the picked-up workpieces to the workpiece conveying track; If the workpiece conveying track is in a busy state and the straight-line cutting machine adjacent to the workpiece conveying track is in an idle state, the sorting gantry device is configured to convey the picked-up workpieces to the buffer station away from the workpiece conveying track; If the workpiece conveying track is in a busy state and the straight-line cutting machine away from the workpiece conveying track is in an idle state, the sorting gantry device is configured to convey the picked-up workpieces to the buffer station adjacent to the workpiece conveying track; The sorting gantry device further comprises the following steps after placing the workpieces in the buffer station: The sorting gantry device is used to place the workpieces stored in the buffer station on the workpiece conveying track according to the determined state of the target straight-line cutting machine and the state of the straight-line cutting machine adjacent to the target straight-line cutting machine.

2. The sheet cutting and sorting system of claim 1, wherein, The sorting gantry device at least comprises a gantry track and a lifting device for picking the workpieces; wherein the lifting device reciprocally slides on the gantry track in the horizontal direction, and the lifting device is an electromagnetic lifting device or a pneumatic lifting device.

3. The sheet cutting and sorting system of claim 1, wherein, The workpiece conveying track is any one of a plate chain conveying track, a belt conveying track and a roller conveying track.

4. The sheet cutting and sorting system of claim 1, wherein, The plate cutting and sorting system further comprises a feeding crane and at least one plate storage position. The plate storage position is used to store the plate to be cut. The feeding crane is used to obtain the plate to be cut from the plate storage position and transport the plate to be cut to the designated straight-line cutting machine.

5. The sheet cutting and sorting system of claim 1, wherein, The plate cutting and sorting system further comprises a waste placement station used to store the waste generated by the straight-line cutting machine during each cutting of the plate.

6. The sheet cutting and sorting system of claim 1, wherein, The straight-line cutting machine is any one of a flame cutting machine, a plasma cutting machine and a laser cutting machine.

7. A method of cutting and sorting sheet material, characterized by, The control computer applied to the plate cutting and sorting system further comprises at least two straight-line cutting machines, a sorting gantry device, a workpiece conveying track and a buffer station, and the method comprises: After the plate to be cut is placed on the target straight-line cutting machine, the control computer sends a plate ready instruction and a cutting standard file to the target straight-line cutting machine, so that the target straight-line cutting machine cuts the plate to be cut according to the plate ready instruction and the cutting standard file to obtain at least one workpiece and determine the position information of each workpiece, wherein the cutting standard file comprises the size of the plate to be cut, the cutting position and the size of the workpiece; The control computer obtains the position information of each workpiece and sends the position information to the sorting gantry device, so that the sorting gantry device picks the workpieces according to the position information of the workpieces and places the picked workpieces on the workpiece conveying track or different buffer stations according to the state of the workpiece conveying track and / or the state of the straight-line cutting machine adjacent to the target straight-line cutting machine; The process of the control computer sending the plate ready instruction and the cutting standard file to the target straight-line cutting machine comprises: Each of the straight-line cutting machines corresponds to a cutting machine control system, and the control computer controls the plate ready instruction and the cutting standard file to be issued to the cutting machine control system corresponding to the target straight-line cutting machine through the cutting machine control system; The process of the target straight-line cutting machine determining the position information of each workpiece comprises: Before cutting the plate to be cut, the target straight-line cutting machine automatically identifies the reference position of the plate to be cut; wherein the reference position is the position of at least one vertex of the plate to be cut. The target straight-line cutting machine determines position information of each workpiece according to the reference position and the cutting position and workpiece size set in the cutting standard file after completing cutting of the to-be-cut plate; the position information is relative position, i.e. position relative to the reference position; The process in which the sorting gantry device places the picked workpieces on the workpiece conveying track or different buffer stations includes: If the workpiece conveying track is in an idle state and the straight-line cutting machine is in a busy state, the picked workpiece is directly transported to the workpiece conveying track; If the workpiece conveying track is in a busy state and the straight-line cutting machine adjacent thereto is in an idle state, the picked workpiece is transported to the buffer station away from the workpiece conveying track; If the workpiece conveying track is in a busy state and the straight-line cutting machine away therefrom is in an idle state, the picked workpiece is transported to the buffer station adjacent to the workpiece conveying track; After the sorting gantry device places the picked workpieces on different buffer stations, the process further includes: The sorting gantry device places the workpieces stored in the buffer stations on the workpiece conveying track according to the determined state of the target straight-line cutting machine and the state of the straight-line cutting machine adjacent to the target straight-line cutting machine.

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