A numerical control bending machine with a laser protection mechanism and its method

Abstract

The present invention discloses a numerically controlled bending machine with a laser protection mechanism and a method thereof, belonging to the field of bending machines. A numerically controlled bending machine with a laser protection mechanism according to the present invention includes: a bending machine main body; and further includes: a support base, a first bending die and a second bending die are installed on the upper end surface of the workbench; a laser protection device, a laser positioning probe and a red heat probe are installed inside the laser protection device; a lower pressing plate, a compensator is installed at the lower end of the lower pressing plate. The present invention solves the problems in the prior art that the precision effect of the numerically controlled bending machine is general, and the safety protection work is not in place, affecting the working effect. During the bending process, the laser positioning probe moves along with the position of the lower pressing plate, detecting at multiple angles. During the bending process, the deformation amount of the bent workpiece is measured by a grating scale, and fed back to the servo controller to adjust the hydraulic oil volume, and the bending deformation amount is monitored in real time, cooperating with the grating scale to further improve the bending precision and the product quality.

Description

Technical Field

[0001] The present invention relates to the technical field of bending machines, and in particular to a numerical control bending machine with a laser protection mechanism and a method thereof. Background Art

[0002] A bending machine is a machine that can bend thin plates, mainly by jointly bending the plates with a cooperating upper die and lower die.

[0003] In the prior art, such as a numerical control bending machine with the publication number: CN113182390A, in this patent, the sliding receiving table stays at a position opposite to the upper die mechanism under the action of the limiting device, the driving member drives the housing to slide along the setting direction of the guiding member, and the tool assembly bends the plate to be processed placed on the sliding receiving table. It can form the plate in one step and has a higher degree of automation.

[0004] However, in the above technology, the accuracy of the existing numerical control bending machine is generally average, and the safety protection work is not in place, affecting the working effect.

[0005] In view of these defects, it is very necessary to design a numerical control bending machine with a laser protection mechanism and a method thereof. Summary of the Invention

[0006] The purpose of the present invention is to provide a numerical control bending machine with a laser protection mechanism and a method thereof, which can solve the problems that the accuracy of the existing numerical control bending machine is generally average, and the safety protection work is not in place, affecting the working effect.

[0007] To achieve the above object, the present invention provides the following technical solutions: A numerical control bending machine with a laser protection mechanism, comprising:

[0008] A bending machine main body, a servo electric box for adjusting the position of the electric device is installed on the front end face of the bending machine main body, and electric cabinets for adjusting the current switch are installed on both outer sides of the bending machine main body;

[0009] It further includes:

[0010] A support base, the support base for supporting the balance of the bending machine main body is located below the front end face of the bending machine main body, a workbench for bending work is installed at the upper end of the support base, and a first bending die and a second bending die are installed on the upper end face of the workbench;

[0011] A laser protection device, the laser protection device for detecting the position and safety protection is located on one side of the workbench, and a laser positioning probe and a red-hot probe are installed inside the laser protection device;

[0012] Lower platen. The lower platen for bending work is located above the workbench. A first push-pull upper module fixture and a second push-pull upper module fixture for quickly clamping the upper module are respectively installed at the front end and the rear end of the lower platen. The position of the first push-pull upper module fixture corresponds to the position of the second bending die, and the position of the second push-pull upper module fixture corresponds to the position of the first bending die. A compensator is installed at the lower end of the lower platen;

[0013] First intelligent oil cylinder assembly. The first intelligent oil cylinder assembly for intelligently adjusting the height is located on the outer sides of the first push-pull upper module fixture;

[0014] Second intelligent oil cylinder assembly. The second intelligent oil cylinder assembly for intelligently adjusting the height is located on the upper sides of the lower platen.

[0015] Preferably, a servo controller and a synchronous servo motor are installed inside the servo electric box. The input end of the servo electric box is connected to the output ends of the pressure regulating module and the flow regulating module. The output end of the servo controller is connected to the input end of the synchronous servo motor. The synchronous servo motor is connected to the bi-directional plunger pump through a coupling. The bi-directional plunger pump is communicated with the electro-hydraulic proportional valve group through an oil outlet pipe. The electro-hydraulic proportional valve group is respectively communicated with the first intelligent oil cylinder assembly and the second intelligent oil cylinder assembly.

[0016] Preferably, the input end of the servo controller is connected to the output end of the power supply interface. The output end of the servo controller is respectively connected to the input ends of the power resistor and the resolver. The resolver is electrically connected to the synchronous servo motor. A pressure sensor is installed between the bi-directional plunger pump and the oil outlet pipe. The pressure sensor is electrically connected to the servo controller. An oil inlet is arranged on one side of the bi-directional plunger pump.

[0017] Preferably, a cylinder mounting cover is installed at the upper end of the laser protection device. The cylinder mounting cover is fixedly connected to the laser protection device through a connecting plate. An electric cylinder is installed inside the cylinder mounting cover. A bending arm is arranged at the upper end of the electric cylinder. The bending arm is connected to the upper end of the electric cylinder through a fixing screw. A connecting arm is welded to one side of the bending arm. A rotating arm is installed at one end of the connecting arm. An electric motor is installed at the rear end of the rotating arm.

[0018] Preferably, the support base is welded to the bending machine main body. The workbench and the support base are set as an integral structure. Both the first bending die and the second bending die are fixedly connected to the workbench through hydraulic clamping.

[0019] Preferably, an operation switch is provided on one side of the exterior of the workbench. On one side of the upper end of the operation switch, a fixed arm is installed. One end of the fixed arm is connected to the main body of the bending machine through a fixing screw, and the operation switch is electrically connected to the electrical cabinet through a wire. A display screen and a switch button are provided on the exterior of the electrical cabinet.

[0020] Preferably, sliding grooves are provided on both sides of the exterior of the main body of the bending machine. A first linear guide rail and a grating ruler are provided inside the sliding grooves. The grating ruler is used to detect the deformation amount of the workpiece. The first intelligent oil cylinder assembly is slidably connected to the main body of the bending machine through the first linear guide rail. A lifting plate is welded to the lower end of the first intelligent oil cylinder assembly. The lifting plate is connected to the exterior of the first push-pull type upper module fixture through a fixing screw. The lower end of the second intelligent oil cylinder assembly is connected to the lower pressing plate through a fixing screw. A second linear guide rail is provided on the exterior of the second intelligent oil cylinder assembly. The second linear guide rail is welded to the main body of the bending machine. The second intelligent oil cylinder assembly is slidably connected to the main body of the bending machine through the second linear guide rail. A first hydraulic cylinder is installed at the upper end of the first intelligent oil cylinder assembly. A second hydraulic cylinder is installed at the upper end of the second intelligent oil cylinder assembly. The upper ends of the first hydraulic cylinder and the second hydraulic cylinder are both fixedly connected to the servo electric box.

[0021] A method for using a numerical control bending machine with a laser protection mechanism includes the following steps:

[0022] Step 1: Fix the first push-pull type upper module fixture and the second push-pull type upper module fixture to the workbench through hydraulic clamping, and install the upper die through the first push-pull type upper module fixture and the second push-pull type upper module fixture according to requirements.

[0023] Step 2: Adjust the flow rate adjustment module and the pressure adjustment module according to the bending requirements, perform numerical control work through the servo electric box. The servo electric box adjusts the synchronous servo motor, adjusts the double plunger pump through the synchronous servo motor, adjusts the first hydraulic cylinder and the second hydraulic cylinder, and adjusts the elongation distance according to requirements.

[0024] Step 3: Turn on the laser protection device, detect the position of the bent workpiece and the position of the operator through the laser positioning probe and the red-hot probe, adjust the angle of the rotating arm through the electric motor, drive the laser protection device to move in cooperation with the telescopic movement of the electric cylinder, and move following the position of the lower pressing plate during the bending process for multi-angle detection.

[0025] Step 4: After positioning, select an appropriate oil intake amount according to the numerical control information to achieve synchronization of the two cylinders, measure the deformation amount of the bent workpiece through the grating ruler, feedback it to the servo controller, adjust the hydraulic oil amount, and feedback it to the compensator for compensation to perform high-precision bending work.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] 1. The numerical control bending machine with a laser protection mechanism and its method. Before working, install the upper die according to requirements through the first push-pull type upper die fixture and the second push-pull type upper die fixture. Turn on the laser protection device, detect the position of the bending workpiece and the position of the personnel through the laser positioning probe and the red-hot probe. After ensuring safety, turn on the hydraulic switch. During the bending operation, adjust the angle of the rotating arm through the electric motor. The connecting arm drives the cylinder mounting cover to rotate, adjusting the position of the laser protection device, enabling the laser protection device to move at various angles. It can be adjusted according to the actual bending operation work. The laser protection device can be driven to move by the telescopic movement of the electric cylinder. During the bending process, the laser positioning probe moves following the position of the lower pressing plate, detecting at multiple angles. During the bending process, the bending deformation amount is monitored in real time, and the grating ruler is used to further improve the bending accuracy and product quality. The servo controller controls the synchronous servo motor and the two-way plunger pump to adjust the oil output of the oil cylinder, thereby changing the position height of the lifting plate, effectively improving the work quality, achieving multi-directional adjustment and precise positioning, and having a better monitoring effect, which is beneficial to adapting to different work and bending workpieces.

[0028] 2. The numerical control bending machine with a laser protection mechanism and its method. During work, adjust the flow regulation module and the pressure regulation module according to the bending requirements. Carry out numerical control work through the servo electric box. The servo electric box adjusts the synchronous servo motor, and the synchronous servo motor adjusts the two-way plunger pump to regulate the first hydraulic cylinder and the second hydraulic cylinder. Adjust the elongation distance according to requirements, and then measure the deformation amount of the bending workpiece through the grating ruler, feedback it to the servo controller, adjust the hydraulic oil volume, and feedback it to the compensator for compensation. According to the numerical control information, select the appropriate oil intake to achieve synchronization of the two cylinders, thereby improving the bending accuracy. The structure is simple and easy to use. Description of the Drawings

[0029] Figure 1 Isometric view of the side view of the present invention;

[0030] Figure 2 Isometric view of the other side of the present invention;

[0031] Figure 3 Internal structure diagram of the servo electric box of the present invention;

[0032] Figure 4 Structural schematic diagram of the laser protection device of the present invention;

[0033] Figure 5 For the present invention Figure 1 Partial enlarged view of area A in the present invention;

[0034] Figure 6 For the present invention Figure 2 Partial enlarged view of area B in the present invention.

[0035] In the figure: 1. Bending machine main body; 101. Sliding groove; 102. First linear guide; 103. Grating ruler; 2. Servo electric box; 201. Servo controller; 202. Pressure regulating module; 203. Flow regulating module; 204. Synchronous servo motor; 2041. Resolver; 2042. Coupling; 205. Double-plunger pump; 2051. Oil inlet; 2052. Pressure sensor; 2053. Oil outlet pipe; 206. Electro-hydraulic proportional valve group; 207. Power resistor; 208. Power supply interface; 3. Laser protection device; 301. Laser positioning probe; 302. Cylinder mounting cover; 3021. Electric cylinder; 3022. Connecting plate; 303. Bending arm; 304. Connecting arm; 305. Rotating arm; 3051. Electric motor; 4. Support base; 401. Workbench; 402. First bending die; 403. Second bending die; 5. Operation switch; 501. Fixed arm; 6. Electric cabinet; 601. Display screen; 602. Switch button; 7. First intelligent oil cylinder assembly; 701. First hydraulic cylinder; 702. Lifting plate; 8. Second intelligent oil cylinder assembly; 801. Second hydraulic cylinder; 802. Second linear guide; 9. Lower pressing plate; 901. First push-pull upper module fixture; 902. Second push-pull upper module fixture. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0037] To solve the technical problem that the accuracy effect of the existing numerical control bending machine is generally average in the prior art, please refer to Figure 1 - Figure 3 、 Figure 5 - Figure 6 and the following technical solutions are provided:

[0038] A numerical control bending machine with a laser protection mechanism, comprising:

[0039] The bending machine main body 1, a servo electric box 2 for adjusting the position of the electric device is installed on the front end face of the bending machine main body 1, and electric cabinets 6 for adjusting the current switch are installed on both outer sides of the bending machine main body 1;

[0040] It further includes:

[0041] A support base 4 for supporting the balance of the bending machine body 1 is located below the front end surface of the bending machine body 1, and a workbench 401 for bending work is installed on the upper end of the support base 4, and a first bending mold 402 and a second bending mold 403 are installed on the upper end surface of the workbench 401;

[0042] The laser protection device 3, which is used for position detection and safety protection, is located on one side of the workbench 401. A laser positioning probe 301 and a red-hot probe are installed inside the laser protection device 3;

[0043] The lower pressing plate 9 used for bending work is located above the workbench 401. The front end and rear end of the lower pressing plate 9 are respectively installed with a first push-pull upper module clamp 901 and a second push-pull upper module clamp 902 for quickly clamping the upper module. The position of the first push-pull upper module clamp 901 corresponds to the position of the second bending mold 403, and the position of the second push-pull upper module clamp 902 corresponds to the position of the first bending mold 402, and a compensator is installed at the lower end of the lower pressing plate 9;

[0044] The first intelligent cylinder assembly 7, which is used for intelligently adjusting the height, is located on both sides of the outside of the first push-pull upper module fixture 901;

[0045] The second intelligent cylinder assembly 8 , which is used for intelligently adjusting the height, is located on both sides above the lower pressing plate 9 .

[0046] A servo controller 201 and a synchronous servo motor 204 are installed inside the servo electrical box 2. The input end of the servo electrical box 2 is connected to the output ends of the pressure regulating module 202 and the flow regulating module 203. The output end of the servo controller 201 is connected to the input end of the synchronous servo motor 204. The synchronous servo motor 204 is connected to the bidirectional piston pump 205 through a coupling 2042. The bidirectional piston pump 205 is connected to the electro-hydraulic proportional valve group 206 through an oil outlet pipe 2053. The electro-hydraulic proportional valve group 206 is connected to the first intelligent cylinder assembly 7 and the second intelligent cylinder assembly 8 respectively.

[0047] On both outer sides of the main body 1 of the bending machine, sliding grooves 101 are provided. Inside the sliding grooves 101, first linear guide rails 102 and grating scales 103 are provided. The grating scales 103 are used to detect the deformation amount of the workpiece. The first intelligent oil cylinder assembly 7 is slidably connected to the main body 1 of the bending machine through the first linear guide rails 102. A lifting plate 702 is welded to the lower end of the first intelligent oil cylinder assembly 7. The lifting plate 702 is connected to the outside of the first push-pull upper module fixture 901 through fixing screws. The lower end of the second intelligent oil cylinder assembly 8 is connected to the lower pressing plate 9 through fixing screws. A second linear guide rail 802 is provided outside the second intelligent oil cylinder assembly 8. The second linear guide rail 802 is welded to the main body 1 of the bending machine. The second intelligent oil cylinder assembly 8 is slidably connected to the main body 1 of the bending machine through the second linear guide rail 802. A first hydraulic cylinder 701 is installed at the upper end of the first intelligent oil cylinder assembly 7. A second hydraulic cylinder 801 is installed at the upper end of the second intelligent oil cylinder assembly 8. The upper ends of the first hydraulic cylinder 701 and the second hydraulic cylinder 801 are both fixedly connected to the servo electric box 2.

[0048] Specifically, during work, the flow rate adjustment module 203 and the pressure adjustment module 202 are adjusted according to the bending requirements. Numerical control work is carried out through the servo electric box 2. The servo electric box 2 adjusts the synchronous servo motor 204. The two-way plunger pump 205 is adjusted through the synchronous servo motor 204. The first hydraulic cylinder 701 and the second hydraulic cylinder 801 are adjusted. The extension distance is adjusted according to the requirements. Then, the deformation amount of the bent workpiece is measured by the grating scale 103 and fed back to the servo controller 201. The hydraulic oil volume is adjusted and fed back to the compensator for compensation. According to the numerical control information, the appropriate oil intake is selected to achieve the synchronization of the two cylinders, thereby improving the bending accuracy. The structure is simple and easy to use.

[0049] To solve the technical problem of the untimely data feedback of the controller in the above technology, please refer to Figure 3 and the following technical solutions are provided:

[0050] The input end of the servo controller 201 is connected to the output end of the power supply interface 208. The output end of the servo controller 201 is respectively connected to the input ends of the power resistor 207 and the resolver 2041. The resolver 2041 is electrically connected to the synchronous servo motor 204. A pressure sensor 2052 is installed between the two-way plunger pump 205 and the oil outlet pipe 2053. The pressure sensor 2052 is electrically connected to the servo controller 201. And an oil inlet 2051 is provided on one side of the two-way plunger pump 205.

[0051] Specifically, after being powered on through the power interface 208, the servo controller 201 provides the rated voltage of the synchronous servo motor 204 through the resolver 2041. The oil outlet pressure of the bi-directional plunger pump 205 is detected in a timely manner by the pressure sensor 2052. The pressure sensor 2052 feeds back the information to the servo controller 201 in a timely manner. The servo controller 201 adjusts the synchronous servo motor 204 to control the oil volume, ensuring the hydraulic precision and improving the working quality.

[0052] In order to solve the technical problem in the prior art that the existing numerical control bending machine fails to perform safety protection work properly, affecting the working effect, please refer to Figure 1 and Figure 4 to provide the following technical solutions:

[0053] The upper end of the laser protection device 3 is provided with a cylinder mounting cover 302. The cylinder mounting cover 302 is fixedly connected to the laser protection device 3 through a connecting plate 3022. An electric cylinder 3021 is installed inside the cylinder mounting cover 302. The upper end of the electric cylinder 3021 is provided with a bending arm 303. The bending arm 303 is connected to the upper end of the electric cylinder 3021 through a fixing screw. A connecting arm 304 is welded to one side of the bending arm 303. One end of the connecting arm 304 is provided with a rotating arm 305. An electric motor 3051 is installed at the rear end of the rotating arm 305.

[0054] Specifically, before working, install the upper die according to requirements through the first push-pull type upper die fixture 901 and the second push-pull type upper die fixture 902. Turn on the laser protection device 3. Detect the position of the bending workpiece and the position of the operator through the laser positioning probe 301 and the red-hot probe. After ensuring safety, turn on the hydraulic switch. During the bending operation, adjust the angle of the rotating arm 305 through the electric motor 3051, and cooperate with the telescopic movement of the electric cylinder 3021 to drive the laser protection device 3 to move. During the bending process, follow the position of the lower pressing plate 9 and detect from multiple angles. During the bending process, monitor the bending deformation amount in real time to further improve the bending precision and product quality.

[0055] In order to solve the technical problem in the prior art that the bending machine is inconvenient to operate and adjust, please refer to Figure 1 and Figure 2 to provide the following technical solutions:

[0056] The support base 4 is welded to the bending machine main body 1. The workbench 401 and the support base 4 are set as an integral structure. Both the first bending die 402 and the second bending die 403 are fixedly connected to the workbench 401 through hydraulic clamping.

[0057] An operation switch 5 is provided on the outer side of the workbench 401. A fixed arm 501 is installed on one side of the upper end of the operation switch 5. One end of the fixed arm 501 is connected to the bending machine main body 1 through a fixing screw, and the operation switch 5 is electrically connected to the electrical cabinet 6 through a wire. A display screen 601 and a switch button 602 are provided on the outside of the electrical cabinet 6.

[0058] Specifically, during work, the first push-pull type upper module fixture 901 and the second push-pull type upper module fixture 902 can be fixed to the workbench 401 through hydraulic clamping. Place the workpiece above the first push-pull type upper module fixture 901 and the second push-pull type upper module fixture 902. Through the display screen 601, the position information is displayed. After confirmation, the operation can be carried out through the operation switch 5, which is convenient to use.

[0059] A usage method of a numerical control bending machine with a laser protection mechanism includes the following steps:

[0060] Step 1: Fix the first push-pull type upper module fixture 901 and the second push-pull type upper module fixture 902 to the workbench 401 through hydraulic clamping, and install the upper die through the first push-pull type upper module fixture 901 and the second push-pull type upper module fixture 902 according to requirements;

[0061] Step 2: Adjust the flow rate adjustment module 203 and the pressure adjustment module 202 according to the bending requirements, perform numerical control work through the servo electric box 2. The servo electric box 2 adjusts the synchronous servo motor 204, adjusts the two-way plunger pump 205 through the synchronous servo motor 204, adjusts the first hydraulic cylinder 701 and the second hydraulic cylinder 801, and adjusts the elongation distance according to requirements;

[0062] Step 3: Turn on the laser protection device 3, detect the position of the bent workpiece and the position of the operator through the laser positioning probe 301 and the red heat probe. Adjust the angle of the rotating arm 305 through the electric motor 3051, and cooperate with the telescopic movement of the electric cylinder 3021 to drive the laser protection device 3 to move. During the bending process, follow the position of the lower pressing plate 9 and perform multi-angle detection;

[0063] Step 4: After positioning, according to the numerical control information, select an appropriate oil intake to achieve synchronization of the two cylinders. Measure the deformation amount of the bent workpiece through the grating scale 103, feedback it to the servo controller 201, adjust the hydraulic oil volume, and feedback it to the compensator for compensation to perform high-precision bending work.

[0064] Working principle: For this numerical control bending machine with a laser protection mechanism and its method, before working, install the upper die through the first push-pull type upper module fixture 901 and the second push-pull type upper module fixture 902 according to requirements. Turn on the laser protection device 3, detect the position of the bending workpiece through the laser positioning probe 301 and the red-hot probe, and detect the personnel position to ensure safety. Adjust the flow regulation module 203 and the pressure regulation module 202 according to the bending requirements, and perform numerical control work through the servo electric box 2. The servo electric box 2 regulates the synchronous servo motor 204, adjusts the bi-directional plunger pump 205 through the synchronous servo motor 204, regulates the first hydraulic cylinder 701 and the second hydraulic cylinder 801, adjusts the elongation distance according to requirements, then measures the deformation amount of the bending workpiece through the grating scale 103, feeds it back to the servo controller 201, adjusts the hydraulic oil volume, and feeds it back to the compensator for compensation. According to the numerical control information, select an appropriate oil intake volume to achieve synchronization of the two cylinders. The oil outlet pressure of the bi-directional plunger pump 205 is detected in a timely manner by the pressure sensor 2052, and the pressure sensor 2052 feeds back the information to the servo controller 201 in a timely manner. The servo controller 201 regulates the synchronous servo motor 204 to control the oil volume, ensuring hydraulic precision. Display the position information through the display screen 601. After confirmation, the operation can be carried out through the operation switch 5. Turn on the hydraulic switch. During the bending work, adjust the angle of the rotating arm 305 through the electric motor 3051, and cooperate with the telescopic movement of the electric cylinder 3021 to drive the laser protection device 3 to move, move following the position of the lower pressing plate 9 during the bending process, and perform multi-angle detection. During the bending process, monitor the bending deformation amount in real time, further improving the bending precision and product quality.

[0065] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0066] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A numerically controlled bending machine with a laser protection mechanism, Comprising: A bending machine main body (1), on the front end face of the bending machine main body (1) is installed a servo electric box (2) for adjusting the position of the electric equipment, and on both outer sides of the bending machine main body (1) are installed electric cabinets (6) for adjusting the current switch; It is characterized in that it further comprises: A support base (4), the support base (4) for supporting the balance of the bending machine main body (1) is located below the front end face of the bending machine main body (1), on the upper end of the support base (4) is installed a workbench (401) for bending work, and on the upper end face of the workbench (401) are installed a first bending die (402) and a second bending die (403); A laser protection device (3), the laser protection device (3) for detecting the position and safety protection is located on one side of the workbench (401), and inside the laser protection device (3) are installed a laser positioning probe (301) and a red heat probe; A lower pressing plate (9), the lower pressing plate (9) for bending work is located above the workbench (401), at the front end and the rear end of the lower pressing plate (9) are respectively installed a first push-pull type upper module clamp (901) and a second push-pull type upper module clamp (902) for quickly clamping the upper module, the position of the first push-pull type upper module clamp (901) corresponds to the position of the second bending die (403), the position of the second push-pull type upper module clamp (902) corresponds to the position of the first bending die (402), and a compensator is installed at the lower end of the lower pressing plate (9); A first intelligent oil cylinder assembly (7), the first intelligent oil cylinder assembly (7) for intelligently adjusting the height is located on both outer sides of the first push-pull type upper module clamp (901); A second intelligent oil cylinder assembly (8), the second intelligent oil cylinder assembly (8) for intelligently adjusting the height is located on both upper sides of the lower pressing plate (9).

2. The numerically controlled bending machine with a laser protection mechanism according to claim 1, It is characterized in that: Inside the servo electric box (2) are installed a servo controller (201) and a synchronous servo motor (204), the input end of the servo electric box (2) is connected to the output ends of a pressure regulating module (202) and a flow regulating module (203), the output end of the servo controller (201) is connected to the input end of the synchronous servo motor (204), the synchronous servo motor (204) is connected to a two-way plunger pump (205) through a coupling (2042), the two-way plunger pump (205) is communicated with an electro-hydraulic proportional valve group (206) through an oil outlet pipe (2053), and the electro-hydraulic proportional valve group (206) is respectively communicated with the first intelligent oil cylinder assembly (7) and the second intelligent oil cylinder assembly (8).

3. The numerically controlled bending machine with a laser protection mechanism according to claim 2, It is characterized in that: The input end of the servo controller (201) is connected to the output end of the power supply interface (208). The output end of the servo controller (201) is respectively connected to the input ends of the power resistor (207) and the resolver (2041). The resolver (2041) is electrically connected to the synchronous servo motor (204). A pressure sensor (2052) is installed between the bidirectional plunger pump (205) and the oil outlet pipe (2053). The pressure sensor (2052) is electrically connected to the servo controller (201). And an oil inlet (2051) is provided on one side of the bidirectional plunger pump (205).

4. A numerically controlled bending machine with a laser protection mechanism according to claim 3, characterized in that: A cylinder mounting cover (302) is installed at the upper end of the laser protection device (3). The cylinder mounting cover (302) is fixedly connected to the laser protection device (3) through a connecting plate (3022). And an electric cylinder (3021) is installed inside the cylinder mounting cover (302). A bending arm (303) is provided at the upper end of the electric cylinder (3021). The bending arm (303) is connected to the upper end of the electric cylinder (3021) through a fixing screw. And a connecting arm (304) is welded to one side of the bending arm (303). A rotating arm (305) is installed at one end of the connecting arm (304). An electric motor (3051) is installed at the rear end of the rotating arm (305).

5. A numerically controlled bending machine with a laser protection mechanism according to claim 4, characterized in that: The support base (4) is welded to the bending machine main body (1). The workbench (401) and the support base (4) are set as an integral structure. The first bending die (402) and the second bending die (403) are both fixedly connected to the workbench (401) by hydraulic clamping.

6. A numerically controlled bending machine with a laser protection mechanism according to claim 5, characterized in that: An operation switch (5) is provided on the outer side of one side of the workbench (401). A fixing arm (501) is installed on one side of the upper end of the operation switch (5). One end of the fixing arm (501) is connected to the bending machine main body (1) through a fixing screw. And the operation switch (5) is electrically connected to the electrical cabinet (6) through a wire. A display screen (601) and a switch button (602) are provided on the outside of the electrical cabinet (6).

7. A numerically controlled bending machine with a laser protection mechanism according to claim 6, characterized in that: On both outer sides of the bending machine main body (1), sliding grooves (101) are provided. Inside the sliding grooves (101), first linear guide rails (102) and grating scales (103) are provided. The grating scales (103) are used to detect the deformation amount of the workpiece. The first intelligent oil cylinder assembly (7) is slidably connected to the bending machine main body (1) through the first linear guide rails (102). The lower end of the first intelligent oil cylinder assembly (7) is welded with a lifting plate (702). The lifting plate (702) is connected to the outside of the first push-pull type upper module fixture (901) through fixing screws. The lower end of the second intelligent oil cylinder assembly (8) is connected to the lower pressing plate (9) through fixing screws. A second linear guide rail (802) is provided outside the second intelligent oil cylinder assembly (8). The second linear guide rail (802) is welded to the bending machine main body (1). The second intelligent oil cylinder assembly (8) is slidably connected to the bending machine main body (1) through the second linear guide rail (802). The upper end of the first intelligent oil cylinder assembly (7) is equipped with a first hydraulic cylinder (701). The upper end of the second intelligent oil cylinder assembly (8) is equipped with a second hydraulic cylinder (801). The upper ends of the first hydraulic cylinder (701) and the second hydraulic cylinder (801) are both fixedly connected to the servo electric box (2).

8. A method for using a numerically controlled bending machine with a laser protection mechanism according to claim 7, characterized in that, it includes the following steps: Step 1: Fix the first push-pull type upper module fixture (901) and the second push-pull type upper module fixture (902) to the workbench (401) through hydraulic clamping, and install the upper die through the first push-pull type upper module fixture (901) and the second push-pull type upper module fixture (902) according to requirements; Step 2: Adjust the flow rate adjustment module (203) and the pressure adjustment module (202) according to the bending requirements, perform numerical control work through the servo electric box (2). The servo electric box (2) adjusts the synchronous servo motor (204), adjusts the double-headed plunger pump (205) through the synchronous servo motor (204), adjusts the first hydraulic cylinder (701) and the second hydraulic cylinder (801), and adjusts the elongation distance according to requirements; Step 3: Turn on the laser protection device (3), detect the position of the bent workpiece and the position of the operator through the laser positioning probe (301) and the red heat probe, adjust the angle of the rotating arm (305) through the electric motor (3051), drive the laser protection device (3) to move in cooperation with the telescopic movement of the electric cylinder (3021), and move along with the position of the lower pressing plate (9) during the bending process for multi-angle detection; Step 4: After positioning, select an appropriate oil intake amount according to the numerical control information to achieve synchronization of the two cylinders, measure the deformation amount of the bent workpiece through the grating scale (103), feedback it to the servo controller (201), adjust the hydraulic oil amount, feedback it to the compensator for compensation, and perform high-precision bending work.

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