Control method of full servo computer cutting equipment

Abstract

The invention discloses a control method for full-servo computer panel cutting equipment, which is based on the full-servo computer panel cutting equipment. The full-servo computer panel cutting equipment comprises a sawing device, a feeding device, a plate-aligning device, a material pressing device, and a main saw lifting device. The control system of the full-servo computer panel cutting equipment comprises a factory MES, an industrial switch, a programmable controller PLC, an industrial computer, a sawing device control unit, a feeding device control unit, a plate-aligning device control unit, a material pressing device control unit, and a main saw lifting device control unit. The programmable controller PLC communicates with a sawing device servo driver of the sawing device, a feeding device servo driver of the feeding device, a plate-aligning device servo driver of the plate-aligning device, a material pressing device servo driver of the material pressing device, and a main saw lifting device servo driver of the main saw lifting device using PROFINET protocol. Thereby, a full-servo control design is realized, and the efficiency, precision and production stability of the computer panel cutting equipment are greatly improved.

Description

Technical Field

[0001] The invention relates to the field of woodworking machinery furniture board processing technology, in particular to a control method for full-servo computer cutting equipment. Background Art

[0002] With the growth of furniture demand, panel cutting equipment has emerged; most of the current panel cutting equipment is controlled by a single system: a controller and a human-machine interaction are controlled through serial communication. Panel cutting equipment includes longitudinal and transverse cutting computer panel cutting saw equipment. Longitudinal and transverse cutting computer panel cutting saw equipment can realize longitudinal and transverse cutting of panels. During the sawing process, due to the difference between longitudinal and transverse cutting, the longitudinal and transverse cutting processing direction needs to be converted, that is, the panel needs to be turned to realize the transition processing of longitudinal and transverse cutting.

[0003] With the development of industrial intelligence and the need for cost reduction of furniture companies, panel furniture manufacturers are in urgent need of a cutting product with higher production efficiency and processing accuracy. The common design of computer cutting equipment is that the sawing device and feeding device use servo control, which can achieve precise positioning, but other auxiliary processing units such as pressing devices and main saw lifting devices are all controlled by cylinders. Although the cost is low, the disadvantages of low efficiency, poor accuracy and instability have always existed.

[0004] Therefore, it is necessary to develop a new technology to solve the above problems. Summary of the invention

[0005] In view of this, the present invention aims to address the deficiencies in the prior art, and its main purpose is to provide a control method for a full-servo computer cutting equipment, which realizes a full-servo control design and greatly improves the efficiency, precision and production stability of the computer cutting equipment.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A control method for a full-servo computer panel cutting device is based on the full-servo computer panel cutting device. The full-servo computer panel cutting device includes a sawing device, a feeding device, a panel alignment device, a material pressing device, and a main saw lifting device. The control system of the full-servo computer panel cutting device includes a factory MES, an industrial switch, a programmable controller PLC, an industrial computer, a sawing device control unit, a feeding device control unit, a panel alignment device control unit, a material pressing device control unit, and a main saw lifting device control unit. The industrial switch is connected to the factory MES for bidirectional control. The programmable controller PLC and the industrial computer are respectively connected to the industrial switch for bidirectional control via TCP / IP protocol using a network cable. The programmable controller PLC is connected to a data bus. , the feeding device control unit, the board leveling device control unit, the material pressing device control unit, and the main saw lifting device control unit adopt PROFINET protocol communication and are respectively connected in parallel with the data bus bidirectional control; the sawing device control unit, the feeding device control unit, the board leveling device control unit, the material pressing device control unit, and the main saw lifting device control unit respectively control the sawing device, the feeding device, the board leveling device, the material pressing device, and the main saw lifting device; the programmable controller PLC and the sawing device servo driver of the sawing device, the feeding device servo driver of the feeding device, the board leveling device servo driver, the material pressing device servo driver of the material pressing device, and the main saw lifting device servo driver of the main saw lifting device all adopt PROFINET protocol communication;

[0008] It includes the following steps:

[0009] Step 1: After the equipment returns to the origin, the operator places the plate properly and starts continuous sawing;

[0010] Step 2: Servo positioning of the feeding device: the work clamp of the feeding device pulls the material back to position, and at the same time, the servo positioning of the sawing device: the saw seat of the sawing device retreats to a suitable position, and the main and auxiliary saw motors of the sawing device start to drive the saw blade to rotate;

[0011] Step 3: The board alignment device is installed on the saw seat of the sawing device and is positioned by the sawing device servo. After the board alignment device rises to the right position, the saw seat of the sawing device quickly approaches the board. The torque generated by the servo motor is detected to determine whether the board is aligned in place. After it is in place, the coordinate X of the sawing device at that time is recorded.

[0012] Step 4: Servo positioning of the pressing device: The pressing beam of the pressing device is rapidly lowered by two servo motors on both sides using gantry synchronous control. The torque generated when the pressing beam of the pressing device presses the plate is detected to determine whether to press the material. After pressing the material, the coordinate Z1 of the pressing device at that time is recorded;

[0013] Step 5: After the pressing beam of the pressing device presses the material, the saw seat of the sawing device retreats 10mm at high speed, that is, the coordinate of the sawing device is X+10, and the plate aligning device descends at the same time;

[0014] Step 6: After the sawing device coordinate is X+10, the main saw lifting device servo positioning: the main saw lifting device drives the main saw to rise, and the main saw lifting device drives the main saw to rise. The coordinate Z2 is determined according to the coordinate Z1 of the pressing device recorded after the pressing beam of the pressing device presses the material: Z2=Z1+30;

[0015] Step 7: The main saw rises to its proper position and starts sawing the board;

[0016] Step 8: When the sawing device coordinate is 0 during the sawing process of the saw seat of the sawing device, the sawing is considered to be completed, and the saw blade is driven down by the servo of the main saw lifting device, and the descending position is 10 mm below the saw blade working table;

[0017] Step 9: After sawing is completed, the pressure beam is raised 15mm at high speed driven by the servo of the pressure device;

[0018] Step 10: The feeding device servo drives the work clamp to deliver the plate to a new positioning position, and at the same time, the sawing device servo drives the main saw to retreat to the positioning position at high speed;

[0019] Step 11: After the main saw retreats to its proper position, the board alignment device rises and is driven by the sawing device servo to be positioned at high speed to the coordinate X determined in step 3, and aligned with the board;

[0020] Step 12: The pressing beam of the pressing device descends at high speed to the coordinate Z1 determined in step 4 to press the plate;

[0021] Step 13: Repeat steps 5 to 9 until the board sawing process is completed;

[0022] Step 14: After sawing is completed, all servo units return to their origin positions.

[0023] As a preferred solution, the sawing device control unit includes a sawing device feed control unit, a main saw drive control unit, a secondary saw drive control unit, a secondary saw left and right adjustment mechanism control unit, and a secondary saw up and down adjustment mechanism control unit connected in parallel with the data bus bidirectional control.

[0024] As a preferred solution, the sawing device feed control unit comprises the sawing device servo driver bidirectionally controlled in parallel with the data bus, and the sawing device servo motor bidirectionally controlled in series with the sawing device servo driver;

[0025] The main saw driving control unit comprises a first I / O module connected in parallel with the data bus bidirectionally controlled, a first thermal relay connected in series with the first I / O module unidirectionally controlled, a first contactor connected in series with the first thermal relay unidirectionally controlled, and a main saw motor connected in series with the first contactor unidirectionally controlled; the first I / O module unidirectionally controls the first thermal relay, the first thermal relay unidirectionally controls the first contactor, and the first contactor unidirectionally controls the main saw motor;

[0026] The secondary saw driving control unit comprises a second I / O module connected in parallel with the data bus bidirectionally controlled, a second thermal relay connected in series with the second I / O module unidirectionally controlled, a second contactor connected in series with the second thermal relay unidirectionally controlled, and a secondary saw motor connected in series with the second contactor unidirectionally controlled; the second I / O module unidirectionally controls the second thermal relay, the second thermal relay unidirectionally controls the second contactor, and the second contactor unidirectionally controls the secondary saw motor;

[0027] The control unit of the sub-saw left-right adjustment mechanism comprises a third I / O module bidirectionally controlled in parallel with the data bus, a sub-saw stepping driver unidirectionally controlled in series with the third I / O module, and a sub-saw stepping motor bidirectionally controlled in series with the sub-saw stepping driver; the third I / O module unidirectionally controls the sub-saw stepping driver;

[0028] The control unit of the auxiliary saw up and down adjustment mechanism includes a fourth I / O module connected in parallel with the data bus for bidirectional control, an intermediate relay connected in series with the fourth I / O module for unidirectional control, and an auxiliary saw up and down motor connected in series with the intermediate relay for unidirectional control; the fourth I / O module unidirectionally controls the intermediate relay, and the intermediate relay unidirectionally controls the auxiliary saw up and down motor.

[0029] As a preferred solution, the feeding device control unit includes a work clamp feeding mechanism control unit and a clamp device control unit connected in parallel with the data bus bidirectional control;

[0030] The work clamp feeding mechanism control unit includes a work clamp servo driver bidirectionally connected in parallel with the data bus, and a work clamp servo motor bidirectionally connected in series with the work clamp servo driver; the work clamp servo driver is the feeding device servo driver;

[0031] The clamping device control unit includes a plurality of clamping mechanism clamping control units, and the clamping mechanism clamping control unit includes a fifth I / O module connected in parallel with the data bus bidirectional control, a first solenoid valve connected in series with the fifth I / O module unidirectional control, and a clamping cylinder connected in series with the first solenoid valve unidirectional control; the fifth I / O module unidirectionally controls the first solenoid valve, and the first solenoid valve unidirectionally controls the clamping cylinder.

[0032] As a preferred solution, the control unit of the Qi board device includes a sixth I / O module connected in parallel with the data bus for bidirectional control, a second solenoid valve connected in series with the sixth I / O module for unidirectional control, a cylinder connected in series with the second solenoid valve for unidirectional control, and two induction switches installed on the cylinder, the two induction switches are connected in parallel with the sixth I / O module for bidirectional control; the sixth I / O module unidirectionally controls the second solenoid valve, and the second solenoid valve unidirectionally controls the cylinder.

[0033] As a preferred solution, the pressing device control unit includes a pressing device servo driver bidirectionally controlled in parallel with a data bus, and a pressing servo motor bidirectionally controlled in series with the pressing device servo driver.

[0034] As a preferred solution, the main saw lifting device control unit includes the main saw lifting device servo driver bidirectionally connected in parallel with the data bus, and the main saw lifting device servo motor bidirectionally connected in series with the main saw lifting device servo driver.

[0035] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical scheme that it mainly uses PROFINET protocol to communicate with the programmable controller PLC and the sawing device servo driver of the sawing device, the feeding device servo driver of the feeding device, the plate aligning device servo driver, the pressing device servo driver of the pressing device, and the main saw lifting device servo driver of the main saw lifting device, and adopts the specific step method of step 1 to step 14, so that each device of the full-servo computer cutting device adopts servo control, thereby realizing a full servo control design, greatly improving the efficiency, precision and production stability of the computer cutting device;

[0036] Secondly, after using the control method and system, the lifting and reciprocating action time of the pressure beam of the material pressing device can be shortened from 2 seconds to 0.5 seconds, and the efficiency is improved by 75%; the lifting and reciprocating time of the main saw is shortened from 4 seconds to 1 second, and the efficiency is improved by 75%. In addition, the traditional main saw lifting adopts the method of central closed solenoid valve controlling the cylinder to drive the main saw to achieve the height of the main saw. The control method is simple but cannot accurately position, and can only realize the function of sawing the board. The main saw lifting of the control method and system adopts servo control, which can realize the precise positioning of the saw blade at any position on the stroke, not only realizing the board cutting function, but also realizing special process requirements such as board grooving of any depth, which improves the application range of computer cutting saws.

[0037] In addition, through the combined design of factory MES, industrial switches, programmable controllers PLC, industrial computers, sawing device control units, feeding device control units, board-leveling device control units, pressing device control units, and main saw lifting device control units, the industrial switch is connected to the factory MES for two-way control, and the programmable controllers PLC and industrial computers are connected to the industrial switch for two-way control via TCP / IP protocol using network cables, and the programmable controllers PLC are connected to the data bus for two-way control via PROFINET protocol communication, so that only one PLC is needed to control the entire machine, and convenient manual drawing programming and optimized file import for sawing can be realized, and a local database is provided to record production information, machine status, etc., so that it can be connected to the customer's MES and central control system to realize the informatization and intelligence required by Industry 4.0.

[0038] In order to more clearly illustrate the structural features, technical means and specific purposes and functions achieved by the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is a general schematic block diagram of a control system of an embodiment of the present invention;

[0040] Figure 2 It is a local control frame of the control system of the embodiment of the present invention Figure 1 ;

[0041] Figure 3 It is a local control frame of the control system of the embodiment of the present invention Figure 2 ;

[0042] Figure 4 It is a flow chart of a control method according to an embodiment of the present invention.

[0043] Description of the accompanying drawings:

[0044] 10. Factory MES 20. Industrial switches

[0045] 30. Programmable Controller PLC 40. Industrial Computer

[0046] 50. Sawing device control unit 51. Sawing device feed control unit

[0047] 511. Servo driver of sawing device 512. Servo motor of sawing device

[0048] 52. Main saw drive control unit 521. First I / O module

[0049] 522, first thermal relay 523, first contactor

[0050] 524, main saw motor 53, auxiliary saw drive control unit

[0051] 531, second I / O module 532, second thermal relay

[0052] 533, second contactor 534, auxiliary saw motor

[0053] 54. Auxiliary saw left and right adjustment mechanism control unit 541. Third I / O module

[0054] 542. Auxiliary saw stepper driver 543. Auxiliary saw stepper motor

[0055] 55. Auxiliary saw up and down adjustment mechanism control unit 551. Fourth I / O module

[0056] 552, intermediate relay 553, auxiliary saw upper and lower motor

[0057] 60. Feeding device control unit 61. Work clamp feeding mechanism control unit

[0058] 611, Work clamp servo driver 612, Work clamp servo motor

[0059] 62. Clamping device control unit 621. Clamping mechanism clamping control unit

[0060] 6211, fifth I / O module 6212, first solenoid valve

[0061] 6213, clamping cylinder 70, plate alignment device control unit

[0062] 71. Sixth I / O module 72. Second solenoid valve

[0063] 73. Cylinder 74. Induction switch

[0064] 80. Pressing device control unit 81. Pressing device servo driver

[0065] 82. Material pressing servo motor 90. Main saw lifting device control unit

[0066] 91. Servo driver of main saw lifting device 92. Servo motor of main saw lifting device. DETAILED DESCRIPTION

[0067] Please refer to Figures 1 to 4 As shown, it shows the specific structure of an embodiment of the present invention.

[0068] A full-servo computer panel cutting equipment includes a sawing device, a feeding device, a panel alignment device, a material pressing device, and a main saw lifting device. The control system of the full-servo computer panel cutting equipment includes a factory MES10, an industrial switch 20, a programmable controller PLC30, an industrial computer 40, a sawing device control unit 50, a feeding device control unit 60, a panel alignment device control unit 70, a material pressing device control unit 80, and a main saw lifting device control unit 90. The industrial switch 20 is connected to the factory MES10 for bidirectional control. The programmable controller PLC30 and the industrial computer 40 are respectively connected to the industrial switch 20 for bidirectional control via the TCP / IP protocol using a network cable. The industrial computer 40 is connected to a mouse and a keyboard; the programmable controller PLC30 is connected to a data bus. The sawing device control unit 50, the feeding device control unit 60, the panel alignment device control unit 70, the material pressing device control unit 80, and the main saw lifting device control unit 90. The control unit 70, the pressing device control unit 80, and the main saw lifting device control unit 90 adopt PROFINET protocol communication and are respectively connected in parallel with the data bus bidirectional control; the sawing device control unit 50, the feeding device control unit 60, the board leveling device control unit 70, the pressing device control unit 80, and the main saw lifting device control unit 90 respectively control the sawing device, the feeding device, the board leveling device, the pressing device, and the main saw lifting device; the programmable controller PLC30 and the sawing device servo driver 511 of the sawing device, the feeding device servo driver of the feeding device, the board leveling device servo driver of the pressing device, the pressing device servo driver 81 of the pressing device, and the main saw lifting device servo driver 91 of the main saw lifting device all adopt PROFINET protocol communication to achieve the purposes of fast speed, good real-time performance and high stability.

[0069] like Figure 2 As shown, the sawing device control unit 50 includes a sawing device feed control unit 51, a main saw drive control unit 52, a secondary saw drive control unit 53, a secondary saw left and right adjustment mechanism control unit 54, and a secondary saw up and down adjustment mechanism control unit 55 connected in parallel with the data bus bidirectional control, wherein:

[0070] The sawing device feed control unit 51 comprises the sawing device servo driver 511 bidirectionally controlled and connected in parallel with the data bus, and the sawing device servo motor 512 bidirectionally controlled and connected in series with the sawing device servo driver 511;

[0071] The main saw driving control unit 52 comprises a first I / O module 521 connected in parallel with the data bus bidirectionally controlled, a first thermal relay 522 connected in series with the first I / O module 521 unidirectionally controlled, a first contactor 523 connected in series with the first thermal relay 522 unidirectionally controlled, and a main saw motor 524 connected in series with the first contactor 523 unidirectionally controlled; the first I / O module 521 unidirectionally controls the first thermal relay 522, the first thermal relay 522 unidirectionally controls the first contactor 523, and the first contactor 523 unidirectionally controls the main saw motor 524;

[0072] The secondary saw driving control unit 53 comprises a second I / O module 531 connected in parallel with the data bus bidirectionally controlled, a second thermal relay 532 connected in series with the second I / O module 531 unidirectionally controlled, a second contactor 533 connected in series with the second thermal relay 532 unidirectionally controlled, and a secondary saw motor 534 connected in series with the second contactor 533 unidirectionally controlled; the second I / O module 531 unidirectionally controls the second thermal relay 532, the second thermal relay 532 unidirectionally controls the second contactor 533, and the second contactor 533 unidirectionally controls the secondary saw motor 534;

[0073] The sub-saw left-right adjustment mechanism control unit 54 includes a third I / O module 541 bidirectionally controlled and connected in parallel with the data bus, a sub-saw stepping driver 542 unidirectionally controlled and connected in series with the third I / O module 541, and a sub-saw stepping motor 543 bidirectionally controlled and connected in series with the sub-saw stepping driver 542; the third I / O module 541 unidirectionally controls the sub-saw stepping driver 542;

[0074] The sub-saw up and down adjustment mechanism control unit 55 includes a fourth I / O module 551 connected in parallel with the data bus for bidirectional control, an intermediate relay 552 connected in series with the fourth I / O module 551 for unidirectional control, and a sub-saw up and down motor 553 connected in series with the intermediate relay 552 for unidirectional control; the fourth I / O module 551 unidirectionally controls the intermediate relay 552, and the intermediate relay 552 unidirectionally controls the sub-saw up and down motor 553.

[0075] like Figure 2 As shown, the feeding device control unit 60 includes a work clamp feeding mechanism control unit 61 and a clamp device control unit 62 which are bidirectionally controlled and connected in parallel with the data bus; wherein:

[0076] The work clamp feeding mechanism control unit 61 includes a work clamp servo driver 611 bidirectionally connected in parallel with the data bus, and a work clamp servo motor 612 bidirectionally connected in series with the work clamp servo driver 611; the work clamp servo driver 611 is the servo driver of the feeding device;

[0077] The clamping device control unit 62 includes a plurality of clamping mechanism clamping control units 621, and the clamping mechanism clamping control unit 621 includes a fifth I / O module 6211 connected in parallel with the data bus for bidirectional control, a first solenoid valve 6212 connected in series with the fifth I / O module 6211 for unidirectional control, and a clamping cylinder 6213 connected in series with the first solenoid valve 6212 for unidirectional control; the fifth I / O module 6211 unidirectionally controls the first solenoid valve 6212, and the first solenoid valve 6212 unidirectionally controls the clamping cylinder 6213.

[0078] like Figure 3 As shown, the panel assembly control unit 70 includes a sixth I / O module 71 bidirectionally controlled in parallel with the data bus, a second solenoid valve 72 unidirectionally controlled in series with the sixth I / O module 71, a cylinder 73 unidirectionally controlled in series with the second solenoid valve 72, and two induction switches 74 installed on the cylinder 73. The two induction switches 74 are bidirectionally controlled and connected to the sixth I / O module 71 in parallel; the sixth I / O module 71 unidirectionally controls the second solenoid valve 72, and the second solenoid valve 72 unidirectionally controls the cylinder 73.

[0079] like Figure 3 As shown, the pressing device control unit 80 includes the pressing device servo driver 81 bidirectionally controlled and connected in parallel with the data bus, and the pressing servo motor 82 bidirectionally controlled and connected in series with the pressing device servo driver 81.

[0080] like Figure 3 As shown, the main saw lifting device control unit 90 includes the main saw lifting device servo driver 91 bidirectionally controlled in parallel with the data bus, and the main saw lifting device servo motor 92 bidirectionally controlled in series with the main saw lifting device servo driver 91.

[0081] like Figure 4 As shown, a control method for a full-servo computer cutting device specifically includes the following steps:

[0082] Step 1: After the equipment returns to the origin, the operator places the plate properly and starts continuous sawing;

[0083] Step 2: Servo positioning of the feeding device: the work clamp of the feeding device pulls the material back to position, and at the same time, the servo positioning of the sawing device: the saw seat of the sawing device retreats to a suitable position, and the main and auxiliary saw motors 534 of the sawing device are started to drive the saw blade to rotate;

[0084] Step 3: The board alignment device is installed on the saw seat of the sawing device and is positioned by the sawing device servo. After the board alignment device rises to the right position, the saw seat of the sawing device quickly approaches the board. The torque generated by the servo motor is detected to determine whether the board is aligned in place. After it is in place, the coordinate X of the sawing device at that time is recorded.

[0085] Step 4: Servo positioning of the pressing device: The pressing beam of the pressing device is rapidly lowered by two servo motors on both sides using gantry synchronous control. The torque generated when the pressing beam of the pressing device presses the plate is detected to determine whether to press the material. After pressing the material, the coordinate Z1 of the pressing device at that time is recorded;

[0086] Step 5: After the pressing beam of the pressing device presses the material, the saw seat of the sawing device retreats 10mm at high speed, that is, the coordinate of the sawing device is X+10, and the plate aligning device descends at the same time;

[0087] Step 6: After the sawing device coordinate is X+10, the main saw lifting device servo positioning: the main saw lifting device drives the main saw to rise, and the main saw lifting device drives the main saw to rise. The coordinate Z2 is determined according to the coordinate Z1 of the pressing device recorded after the pressing beam of the pressing device presses the material: Z2=Z1+30;

[0088] Step 7: The main saw rises to its proper position and starts sawing the board;

[0089] Step 8: When the sawing device coordinates are 0 during the sawing process of the saw seat of the sawing device, the sawing is considered to be completed. The saw blade is driven down by the servo of the main saw lifting device. The lowered position is 10 mm below the saw blade work surface, not to the bottom, so as to shorten the lifting stroke for the next sawing and improve production efficiency.

[0090] Step 9: After sawing is completed, the pressure beam is raised 15mm at high speed driven by the servo of the pressure device;

[0091] Step 10: The feeding device servo drives the work clamp to deliver the plate to a new positioning position, and at the same time, the sawing device servo drives the main saw to retreat to the positioning position at high speed;

[0092] Step 11: After the main saw retreats to its proper position, the board alignment device rises and is driven by the sawing device servo to be positioned at high speed to the coordinate X determined in step 3, and aligned with the board;

[0093] Step 12: The pressing beam of the pressing device descends at high speed to the coordinate Z1 determined in step 4 to press the plate;

[0094] Step 13: Repeat steps 5 to 9 until the board sawing process is completed;

[0095] Step 14: After sawing is completed, all servo units return to their origin positions.

[0096] In summary, the design focus of the present invention is that it mainly uses PROFINET protocol communication between the programmable controller PLC and the sawing device servo driver of the sawing device, the feeding device servo driver of the feeding device, the plate aligning device servo driver, the pressing device servo driver of the pressing device, and the main saw lifting device servo driver of the main saw lifting device, and adopts the specific step method of steps 1 to 14, so that each device of the full servo computer cutting device adopts servo control, thereby realizing full servo control design, greatly improving the efficiency, precision and production stability of the computer cutting device; secondly, after using the present control method and system, the lifting and reciprocating action time of the pressing beam of the pressing device can be shortened from 2 seconds to 0.5 seconds, and the efficiency is improved by 75%; the lifting and reciprocating time of the main saw is shortened from 4 seconds to 1 second, and the efficiency is improved by 75%, and the traditional main saw lifting adopts the central closed solenoid valve to control the cylinder to drive the main saw to achieve the height of the main saw. The control method is simple but cannot accurately position, and can only realize the function of sawing the plate, while the main saw lifting of the present control method and system adopts servo control, which can realize the saw blade at any position on the stroke Precise positioning not only realizes the plate cutting function, but also realizes special process requirements such as plate grooving of any depth, which improves the application scope of computer panel saws; and, through the combined design of factory MES, industrial switch, programmable controller PLC, industrial computer, sawing device control unit, feeding device control unit, board leveling device control unit, pressing device control unit, and main saw lifting device control unit, the industrial switch is connected to the factory MES for two-way control, and the programmable controller PLC and industrial computer are connected to the industrial switch for two-way control through TCP / IP protocol using network cables respectively, and the programmable controller PLC is connected to the data bus, so that the sawing device control unit, feeding device control unit, board leveling device control unit, pressing device control unit, and main saw lifting device control unit are connected in parallel with the data bus for two-way control using PROFINET protocol communication, so that only one PLC can be used to control the whole machine, and convenient manual drawing programming and optimized file import for sawing can be realized, and a local database is provided to record production information, machine status, etc., so that it can be connected with the customer's MES and central control system to realize the informatization and intelligence required by Industry 4.0.

[0097] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A control method for a full-servo computer cutting device, characterized in that: It is based on a full-servo computer panel cutting device, which includes a sawing device, a feeding device, a panel-aligning device, a pressing device, and a main saw lifting device. The control system of the full-servo computer panel cutting device includes a factory MES, an industrial switch, a programmable controller PLC, an industrial computer, a sawing device control unit, a feeding device control unit, a panel-aligning device control unit, a pressing device control unit, and a main saw lifting device control unit. The industrial switch is connected to the factory MES for bidirectional control. The programmable controller PLC and the industrial computer are connected to the industrial switch for bidirectional control through TCP / IP protocol using a network cable respectively. The programmable controller PLC is connected to a data bus. The sawing device control unit, the feeding device control unit, the panel-aligning device control unit, the pressing device control unit, and the main saw lifting device control unit are connected to the data bus for bidirectional control in parallel using PROFINET protocol communication. The sawing device control unit, the feeding device control unit, the panel-aligning device control unit, the pressing device control unit, and the main saw lifting device control unit respectively control the sawing device, the feeding device, the panel-aligning device, the pressing device, and the main saw lifting device respectively; The programmable controller PLC communicates with the sawing device servo driver of the sawing device, the feeding device servo driver of the feeding device, the board aligning device servo driver, the pressing device servo driver of the pressing device, and the main saw lifting device servo driver of the main saw lifting device using PROFINET protocol; It includes the following steps: Step 1: After the equipment returns to the origin, the operator places the plate properly and starts continuous sawing; Step 2: Servo positioning of the feeding device: the work clamp of the feeding device pulls the material back to position, and at the same time, the servo positioning of the sawing device: the saw seat of the sawing device retreats to a suitable position, and the main and auxiliary saw motors of the sawing device start to drive the saw blade to rotate; Step 3: The board alignment device is installed on the saw seat of the sawing device and is positioned by the sawing device servo. After the board alignment device rises to the right position, the saw seat of the sawing device quickly approaches the board. The torque generated by the servo motor is detected to determine whether the board is aligned in place. After it is in place, the coordinate X of the sawing device at that time is recorded. Step 4: Servo positioning of the pressing device: The pressing beam of the pressing device is rapidly lowered by two servo motors on both sides using gantry synchronous control. The torque generated when the pressing beam of the pressing device presses the plate is detected to determine whether to press the material. After pressing the material, the coordinate Z1 of the pressing device at that time is recorded; Step 5: After the pressing beam of the pressing device presses the material, the saw seat of the sawing device retreats 10mm at high speed, that is, the coordinate of the sawing device is X+10, and the plate aligning device descends at the same time; Step 6: After the sawing device coordinate is X+10, the main saw lifting device servo positioning: the main saw lifting device drives the main saw to rise, and the main saw lifting device drives the main saw to rise. The coordinate Z2 is determined according to the coordinate Z1 of the pressing device recorded after the pressing beam of the pressing device presses the material: Z2=Z1+30; Step 7: The main saw rises to its proper position and starts sawing the board; Step 8: When the sawing device coordinate is 0 during the sawing process of the saw seat of the sawing device, the sawing is considered to be completed, and the saw blade is driven down by the servo of the main saw lifting device, and the descending position is 10 mm below the saw blade working table; Step 9: After sawing is completed, the pressure beam is raised 15mm at high speed driven by the servo of the pressure device; Step 10: The feeding device servo drives the work clamp to deliver the plate to a new positioning position, and at the same time, the sawing device servo drives the main saw to retreat to the positioning position at high speed; Step 11: After the main saw retreats to its proper position, the board alignment device rises and is driven by the sawing device servo to be positioned at high speed to the coordinate X determined in step 3, and aligned with the board; Step 12: The pressing beam of the pressing device descends at high speed to the coordinate Z1 determined in step 4 to press the plate; Step 13: Repeat steps 5 to 9 until the board sawing process is completed; Step 14: After sawing is completed, all servo units return to their origin positions.

2. The control method of the full-servo computer cutting equipment according to claim 1 is characterized in that: The sawing device control unit includes a sawing device feed control unit, a main saw drive control unit, a secondary saw drive control unit, a secondary saw left and right adjustment mechanism control unit, and a secondary saw up and down adjustment mechanism control unit connected in parallel with the data bus bidirectional control.

3. The control method of the full-servo computer cutting equipment according to claim 2 is characterized in that: The sawing device feed control unit comprises the sawing device servo driver bidirectionally controlled in parallel with the data bus, and the sawing device servo motor bidirectionally controlled in series with the sawing device servo driver; The main saw driving control unit comprises a first I / O module connected in parallel with the data bus bidirectionally controlled, a first thermal relay connected in series with the first I / O module unidirectionally controlled, a first contactor connected in series with the first thermal relay unidirectionally controlled, and a main saw motor connected in series with the first contactor unidirectionally controlled; the first I / O module unidirectionally controls the first thermal relay, the first thermal relay unidirectionally controls the first contactor, and the first contactor unidirectionally controls the main saw motor; The secondary saw driving control unit comprises a second I / O module connected in parallel with the data bus bidirectionally controlled, a second thermal relay connected in series with the second I / O module unidirectionally controlled, a second contactor connected in series with the second thermal relay unidirectionally controlled, and a secondary saw motor connected in series with the second contactor unidirectionally controlled; the second I / O module unidirectionally controls the second thermal relay, the second thermal relay unidirectionally controls the second contactor, and the second contactor unidirectionally controls the secondary saw motor; The control unit of the sub-saw left-right adjustment mechanism comprises a third I / O module bidirectionally controlled in parallel with the data bus, a sub-saw stepping driver unidirectionally controlled in series with the third I / O module, and a sub-saw stepping motor bidirectionally controlled in series with the sub-saw stepping driver; the third I / O module unidirectionally controls the sub-saw stepping driver; The control unit of the auxiliary saw up and down adjustment mechanism includes a fourth I / O module connected in parallel with the data bus for bidirectional control, an intermediate relay connected in series with the fourth I / O module for unidirectional control, and an auxiliary saw up and down motor connected in series with the intermediate relay for unidirectional control; the fourth I / O module unidirectionally controls the intermediate relay, and the intermediate relay unidirectionally controls the auxiliary saw up and down motor.

4. The control method of the full-servo computer cutting equipment according to claim 1 is characterized in that: The feeding device control unit includes a work clamp feeding mechanism control unit and a clamp device control unit connected in parallel with the data bus bidirectional control; The work clamp feeding mechanism control unit includes a work clamp servo driver bidirectionally connected in parallel with the data bus, and a work clamp servo motor bidirectionally connected in series with the work clamp servo driver; the work clamp servo driver is the feeding device servo driver; The clamping device control unit includes a plurality of clamping mechanism clamping control units, and the clamping mechanism clamping control unit includes a fifth I / O module connected in parallel with the data bus bidirectional control, a first solenoid valve connected in series with the fifth I / O module unidirectional control, and a clamping cylinder connected in series with the first solenoid valve unidirectional control; the fifth I / O module unidirectionally controls the first solenoid valve, and the first solenoid valve unidirectionally controls the clamping cylinder.

5. The control method of the full-servo computer cutting equipment according to claim 1 is characterized in that: The control unit of the Qi board device includes a sixth I / O module connected in parallel with the data bus for bidirectional control, a second solenoid valve connected in series with the sixth I / O module for unidirectional control, a cylinder connected in series with the second solenoid valve for unidirectional control, and two induction switches installed on the cylinder, the two induction switches are connected in parallel with the sixth I / O module for bidirectional control; the sixth I / O module unidirectionally controls the second solenoid valve, and the second solenoid valve unidirectionally controls the cylinder.

6. The control method of the full-servo computer cutting equipment according to claim 1 is characterized in that: The material pressing device control unit comprises a material pressing device servo driver bidirectionally controlled in parallel with a data bus, and a material pressing servo motor bidirectionally controlled in series with the material pressing device servo driver.

7. The control method of the full-servo computer cutting equipment according to claim 1 is characterized in that: The main saw lifting device control unit includes a main saw lifting device servo driver bidirectionally connected in parallel with a data bus, and a main saw lifting device servo motor bidirectionally connected in series with the main saw lifting device servo driver.

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