High-precision metal plate multi-axis linkage numerical control bending machine and using method thereof

Abstract

The invention belongs to the technical field of sheet metal machining, and particularly relates to a high-precision sheet metal multi-axis linkage numerical control bending machine and a using method thereof.The high-precision sheet metal multi-axis linkage numerical control bending machine comprises a rack, an X-axis moving assembly, a Y-axis moving assembly and a machining table, the X-axis moving assembly is arranged at the bottom of the rack, and the Y-axis moving assembly is arranged at the top of the X-axis moving assembly; the machining table is arranged on the top of the Y-axis moving assembly. Before bending, heated hot air can be used for assisting the cleaning mechanism to remove oil stains and impurities on the surface of a metal plate, it is guaranteed that the motion state is stable during bending, and the bending precision is improved; in the bending process, the metal plate bending part can be heated, the material plasticity is improved, the yield strength is reduced, cracks and tearing are avoided, the production efficiency and the bending quality are improved, meanwhile, the impact-resistant temperature sensor monitors and adjusts the temperature in real time, and the bending quality is guaranteed; in addition, the current direction of the temperature control mechanism is changed for refrigeration after bending, and the air blowing mechanism blows cold air to cool the bending part of the metal plate, so that the structural stability of the metal plate is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of sheet metal processing, and in particular relates to a high-precision sheet metal multi-axis linkage CNC bending machine and a use method thereof. Background Art

[0002] At present, sheet metal processing is widely used in many fields, such as aerospace, automobile manufacturing, electronic equipment, mechanical engineering, etc. The requirements for the accuracy of sheet metal bending processing are becoming increasingly stringent. Multi-axis linkage CNC bending machines, as key equipment for sheet metal processing, can accurately control the position of the bending mold through the coordinated movement of multiple coordinate axes, thereby achieving precise bending of the sheet metal. For example, announcement number: CN119346762A discloses a CNC bending machine for sheet metal processing.

[0003] However, when the existing multi-axis linkage CNC bending machines complete the high-precision bending of sheet metal, they do not have the function of heating the bending part. During the bending process, especially for some high-strength, low-plasticity sheet metal materials, such as some high-strength alloy steels, special aluminum alloys, etc., the materials are subjected to greater stress concentration at the bending point. When the stress exceeds the ultimate strength of the material, it is very easy to cause cracks and tears in the sheet metal, which not only seriously affects the quality and performance of the sheet metal parts, but also causes an increase in production costs and a decrease in production efficiency. In addition, before the sheet metal is bent, its surface often has oil stains and impurities due to the processing process. If they are not removed in time, during the bending process, the oil stains will reduce the friction between the material and the mold, resulting in an unstable movement state of the sheet metal during bending, affecting the bending accuracy. Moreover, the oil stains and impurities may also gather at the bending point to form a stress concentration point, further increasing the risk of cracks and tears.

[0004] Therefore, a high-precision sheet metal multi-axis linkage CNC bending machine and a use method thereof are proposed. Summary of the invention

[0005] The object of the present invention is to provide a high-precision sheet metal multi-axis linkage CNC bending machine and a method of using the same in order to solve the above-mentioned problems.

[0006] To achieve the above object, the present invention adopts the following technical scheme: a high-precision sheet metal multi-axis linkage CNC bending machine, comprising a frame, an X-axis moving assembly, a Y-axis moving assembly and a processing table, wherein the X-axis moving assembly is arranged at the bottom of the frame, the Y-axis moving assembly is arranged at the top of the X-axis moving assembly, the processing table is arranged at the top of the Y-axis moving assembly, and further comprising: A first hydraulic cylinder is fixedly arranged on the top of the frame, and a bending punch is fixedly arranged on the movable end of the first hydraulic cylinder, and a bending die is fixedly embedded on the top of the processing table; A temperature control mechanism is disposed inside the bending die, and the temperature control mechanism is used to heat the inside of the bending die; A blowing mechanism is arranged at one end of the bending die, and the blowing end of the blowing mechanism extends to the upper surface of the processing table, and a filtering mechanism is arranged at the other end of the bending die; A cleaning mechanism is arranged on the side wall of the frame, and the cleaning mechanism is located above the processing table; A PLC controller is fixedly arranged on the side wall of the frame, and the X-axis moving assembly, the Y-axis moving assembly, the first hydraulic cylinder, the temperature control mechanism, the blower mechanism, the filter mechanism and the cleaning mechanism are all electrically connected to the PLC controller.

[0007] Preferably, the temperature control mechanism includes a plurality of semiconductor temperature control rods which are fixedly arranged at an angle on both sides of the bending die, the bending die adopts a hollow structure, one ends of the plurality of semiconductor temperature control rods extend to the interior of the bending die, and the other ends of the plurality of semiconductor temperature control rods extend to the bottom of the processing table, a heat conducting plate is fixedly embedded in the interior of the bending die, and two impact-resistant temperature sensors are symmetrically fixedly embedded on the surface of the heat conducting plate.

[0008] Preferably, the blowing mechanism includes an air outlet pipe fixedly arranged at one end of the bending die, an exhaust fan is fixedly arranged at the end of the air outlet pipe away from the bending die, a hollow blowing plate is laterally fixedly arranged at the air outlet end of the exhaust fan, and a plurality of evenly distributed blowing holes are opened on one side of the hollow blowing plate.

[0009] Preferably, the filtering mechanism comprises an air inlet pipe fixedly arranged at the other end of the bending die, a solenoid valve and a filter cartridge are fixedly arranged on the tube wall of the air inlet pipe, and an activated carbon filter is arranged inside the filter cartridge.

[0010] Preferably, the filter cartridge is composed of two threadedly connected cylinders, and a first gas flow meter and a second gas flow meter are fixedly provided on the inner wall of the filter cartridge and on both sides of the activated carbon filter respectively.

[0011] Preferably, the cleaning mechanism includes an organic solvent storage tank, a driving mechanism is provided between the organic solvent storage tank and the side wall of the frame, an isolation plate is fixedly provided inside the organic solvent storage tank, a liquid pump is fixedly provided on the upper surface of the isolation plate, a liquid pump is fixedly provided at the output end of the liquid pump and extends to the bottom of the isolation plate, a nylon cleaning brush is fixedly provided at the bottom of the organic solvent storage tank, and a plurality of evenly distributed liquid outlet holes are opened at the bottom of the organic solvent storage tank.

[0012] Preferably, the driving mechanism includes a second hydraulic cylinder fixedly arranged inside one side of the frame, a moving end of the second hydraulic cylinder is fixedly provided with a moving seat, a third hydraulic cylinder is fixedly provided on the side wall of the moving seat, and the moving end of the third hydraulic cylinder is fixedly connected to the top of the solvent storage tank.

[0013] A method for using a high-precision sheet metal multi-axis linkage CNC bending machine, the method comprising the following steps: S1: Place the sheet metal and position the mold, place the sheet metal to be processed on the surface of the processing table, align the bending part of the sheet metal with the bending die below, and start the X-axis moving component and the Y-axis moving component by operating the PLC controller to automatically align the bending die on the surface of the processing table with the bending punch; S2: Clean the sheet metal surface. After the bending die and the bending punch are positioned, the second and third hydraulic cylinders are started through the PLC controller to drive the organic solvent storage tank and the nylon cleaning brush to move synchronously, so that the nylon cleaning brush reaches the sheet metal surface. At this time, the PLC controller stops the second hydraulic cylinder and starts the liquid pump. The liquid pump sprays the organic solvent in the organic solvent storage tank into the inside of the nylon cleaning brush through the liquid outlet. The third hydraulic cylinder drives the nylon cleaning brush to clean oil and impurities on the sheet metal surface. S3: Auxiliary cleaning and preheating: While cleaning the sheet metal surface, the semiconductor temperature control rod and the exhaust fan are started by operating the PLC controller, and the solenoid valve is opened. The semiconductor temperature control rod heats the gas inside the bending die, and the exhaust fan discharges the hot air into the hollow blowing plate through the air outlet pipe, and then blows it to the sheet metal surface through the blowing hole. The air inlet pipe at the other end of the bending die inhales external air, which is filtered by the activated carbon filter and then participates in the air flow circulation; S4: Bending operation, the cleaning mechanism is reset through the PLC controller, and the surface of the sheet metal is dried with hot air. Then the first hydraulic cylinder is started through the PLC controller. The first hydraulic cylinder extends to drive the bending punch to move downward, and cooperates with the bending die to complete the bending of the sheet metal. During the bending process, the heat in the bending die is transferred to the bending part of the sheet metal through the heat conduction plate. At the same time, the impact-resistant temperature sensor monitors the temperature of the bending part in real time and feeds back the data to the PLC controller. The PLC controller adaptively adjusts the heating temperature of the semiconductor temperature control rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting up the temperature control mechanism and the impact-resistant temperature sensor, the bending part of the sheet metal is heated during the bending process, which can effectively improve the plasticity of the material, reduce the yield strength, and make the sheet metal deform more evenly and smoothly during bending, avoiding cracks and tears due to stress concentration, greatly improving the bending quality, reducing the scrap rate, reducing production costs, and improving production efficiency. At the same time, the impact-resistant temperature sensor monitors the temperature of the bending part in real time, and can adaptively adjust the heating temperature of the semiconductor temperature control rod, so that the bending temperature is kept at a stable stage, avoiding the degradation of material properties due to abnormal temperature, and ensuring the quality and accuracy of sheet metal bending.

[0015] 2. The blower mechanism and cleaning mechanism are set up to clean the sheet metal surface before bending. The organic solvent and nylon cleaning brush are used to effectively remove oil and impurities. At the same time, the heated hot air is assisted by the blower mechanism to reduce the viscosity of the oil and enhance its fluidity, further improving the cleaning effect, avoiding the oil and impurities from affecting the friction between the material and the bending mold, ensuring the stable movement state of the sheet metal during bending, and improving the bending accuracy.

[0016] 3. By changing the current direction of the temperature control mechanism, the temperature control mechanism can be controlled to cool the inside of the bending die, and then the hair dryer can blow cold air. After the bending is completed, the bending part of the sheet metal can be efficiently cooled, so that the bent sheet metal can quickly stabilize at a suitable temperature, effectively improving the dimensional accuracy and structural stability of the sheet metal parts, and optimizing the overall processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of a high-precision sheet metal multi-axis linkage CNC bending machine provided by the present invention; Figure 2 It is a stereoscopic view from another side of a high-precision sheet metal multi-axis linkage CNC bending machine provided by the present invention; Figure 3 It is a schematic diagram of the cutaway structure of a high-precision sheet metal multi-axis linkage CNC bending machine processing table provided by the present invention; Figure 4 It is a stereoscopic view from another side of a processing table of a high-precision sheet metal multi-axis linkage CNC bending machine provided by the present invention; Figure 5 It is a schematic diagram of the cutaway structure of a filter cartridge of a high-precision sheet metal multi-axis linkage CNC bending machine provided by the present invention; Figure 6 The present invention provides a three-dimensional cutaway diagram of a high-precision sheet metal multi-axis linkage CNC bending machine cleaning mechanism.

[0018] In the figure: 1 frame, 2 X-axis moving assembly, 3 Y-axis moving assembly, 4 processing table, 5 first hydraulic cylinder, 6 bending punch, 7 bending die, 8 temperature control mechanism, 81 semiconductor temperature control rod, 82 heat conduction plate, 83 impact-resistant temperature sensor, 9 blowing mechanism, 91 air outlet pipe, 92 exhaust fan, 93 hollow blowing plate, 94 air blowing hole, 10 filtering mechanism, 101 air inlet pipe, 102 solenoid valve, 103 filter cartridge, 104 activated carbon filter, 105 cylinder, 106 first gas flow meter, 107 second gas flow meter, 11 cleaning mechanism, 111 organic solvent storage bin, 112 isolation plate, 113 liquid pump, 114 liquid pumping pipe, 115 nylon cleaning brush, 116 liquid outlet, 12 PLC controller, 13 driving mechanism, 131 second hydraulic cylinder, 132 moving seat, 133 third hydraulic cylinder. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] like Figure 1-Figure 6 As shown, a high-precision sheet metal multi-axis linkage CNC bending machine includes a frame 1, an X-axis moving component 2, a Y-axis moving component 3 and a processing table 4, the X-axis moving component 2 is arranged at the bottom of the frame 1, the Y-axis moving component 3 is arranged at the top of the X-axis moving component 2, and the processing table 4 is arranged at the top of the Y-axis moving component 3. The X-axis moving component 2 and the Y-axis moving component 3 both adopt a motor, a screw rod and a slider structure, and the screw rod is driven to rotate by the motor, and the screw rod can drive the slider to move, thereby realizing the movement of the processing table 4 in the X-axis and Y-axis directions. Since it is a prior art, the specific structure is not disclosed, and it also includes: The first hydraulic cylinder 5 is fixedly arranged on the top of the frame 1, and a bending punch 6 is fixedly arranged on the movable end of the first hydraulic cylinder 5, and a bending die 7 is fixedly embedded on the top of the processing table 4. The first hydraulic cylinder 5 extends to drive the bending punch 6 to move downward and cooperate with the bending die 7 to complete the bending of the sheet metal.

[0021] The temperature control mechanism 8 is arranged inside the bending die 7, and the temperature control mechanism 8 is used to heat the inside of the bending die 7. The temperature control mechanism 8 includes a plurality of semiconductor temperature control rods 81 which are fixedly arranged on both sides of the bending die 7 in an inclined manner. The bending die 7 adopts a hollow structure, one end of the plurality of semiconductor temperature control rods 81 extends to the inside of the bending die 7, and the other end of the plurality of semiconductor temperature control rods 81 extends to the bottom of the processing table 4. A heat conducting plate 82 is fixedly embedded inside the bending die 7, and two impact-resistant temperature control rods 81 are symmetrically fixedly embedded on the surface of the heat conducting plate 82. Sensor 83, the semiconductor temperature control rod 81 generates heat at the hot end and cools at the cold end after current is passed through it, so that the internal gas of the bending die 7 can be heated. By changing the direction of the current passing to the semiconductor temperature control rod 81, the semiconductor temperature control rod 81 will immediately undergo a functional change. The heating end originally located inside the bending die 7 will quickly switch to a cooling state, while the rear end located outside the bending die 7 will correspondingly become a heating end. The sensing end of the impact-resistant temperature sensor 83 is always in real-time contact with the sheet metal bending portion, so that the temperature of the bending portion can be continuously detected stably and accurately.

[0022] A blower mechanism 9 is arranged at one end of the bending die 7, and the blowing end of the blower mechanism 9 extends to the upper surface of the processing table 4. The blower mechanism 9 includes an air outlet pipe 91 fixedly arranged at one end of the bending die 7, and an exhaust fan 92 is fixedly arranged at the end of the air outlet pipe 91 away from the bending die 7. A hollow blowing plate 93 is laterally fixedly arranged at the air outlet end of the exhaust fan 92, and a plurality of evenly distributed blowing holes 94 are opened on one side of the hollow blowing plate 93. When the exhaust fan 92 is working, the gas inside the bending die 7 can be discharged into the interior of the hollow blowing plate 93 through the air outlet pipe 91, and then blown toward the surface of the sheet metal with a stable and soft airflow through the plurality of blowing holes 94; a filtering mechanism 10 is provided at the other end of the bending die 7, and the filtering mechanism 10 includes an air inlet pipe 101 fixedly arranged at the other end of the bending die 7, and an electric The solenoid valve 102 and the filter cartridge 103, the interior of the filter cartridge 103 is provided with an activated carbon filter 104, when the solenoid valve 102 is opened, the external gas can enter the interior of the bending die 7 through the air inlet pipe 101 and the filter cartridge 103, and some sheet metals do not need to be bent by blowing hot air on the surface. At this time, the solenoid valve 102 is closed and the exhaust fan 92 is stopped; the filter cartridge 103 is composed of two threaded cylinders 105, and the inner wall of the filter cartridge 103 and the two sides of the activated carbon filter 104 are respectively fixed with a first gas flow meter 106 and a second gas flow meter 107, the first gas flow meter 106 and the second gas flow meter 107 can monitor the airflow size on both sides of the activated carbon filter 104 in real time, and judge whether the activated carbon filter 104 is saturated according to the detected difference.

[0023] The cleaning mechanism 11 is arranged on the side wall of the frame 1, and the cleaning mechanism 11 is located above the processing table 4. The cleaning mechanism 11 includes an organic solvent storage tank 111. A driving mechanism 13 is arranged between the organic solvent storage tank 111 and the side wall of the frame 1. An isolation plate 112 is fixedly arranged inside the organic solvent storage tank 111. A liquid extraction pump 113 is fixedly arranged on the upper surface of the isolation plate 112. A liquid extraction pipe 114 extending to the bottom of the isolation plate 112 is fixedly arranged at the output end of the liquid extraction pump 113. A nylon cleaning brush 115 is fixedly arranged at the bottom of the organic solvent storage tank 111, and a plurality of evenly distributed liquid outlet holes 116 are opened at the bottom of the organic solvent storage tank 111. When the liquid extraction pump 113 is started, the liquid extraction pump 113 runs to quickly remove the organic solvent in the organic solvent storage tank 111. The organic solvent is evenly sprayed on the inside of the nylon cleaning brush 115 through the liquid outlet 116; the driving mechanism 13 includes a second hydraulic cylinder 131 fixedly arranged inside one side of the frame 1, a moving seat 132 is fixedly arranged on the moving end of the second hydraulic cylinder 131, and a third hydraulic cylinder 133 is fixedly arranged on the side wall of the moving seat 132, and a moving end of the third hydraulic cylinder 133 is fixedly connected to the top of the organic solvent storage tank 111, and the second hydraulic cylinder 131 and the third hydraulic cylinder 133 are started to work, and the second hydraulic cylinder 131 drives the moving seat 132 to move smoothly. At the same time, the third hydraulic cylinder 133 responds quickly, driving the organic solvent storage tank 111 and the nylon cleaning brush 115 to move synchronously. Under the coordinated operation of the two, the nylon cleaning brush 115 is accurately transported to the sheet metal surface.

[0024] The PLC controller 12 is fixedly arranged on the side wall of the frame 1 , and the X-axis moving assembly 2 , the Y-axis moving assembly 3 , the first hydraulic cylinder 5 , the temperature control mechanism 8 , the blower mechanism 9 , the filter mechanism 10 and the cleaning mechanism 11 are all electrically connected to the PLC controller 12 .

[0025] The operating principle of the present invention is described as follows: the staff places the sheet metal to be processed on the surface of the processing table 4 so that the bending part of the sheet metal is aligned with the bending die 7 below. The surface of the processing table 4 is provided with a structure of an electromagnetic block, a permanent magnet block and a spring. By turning on the electromagnetic, the permanent magnet block and the clamping plate are moved and the sheet metal is clamped. When the power is turned off, the elastic force of the spring resets the clamping plate (common in the prior art, and the structure is not specifically disclosed), thereby increasing the stability of the sheet metal moving on the surface of the processing table 4. Then, the PLC controller 12 is manually operated, and the PLC controller 12 starts the X-axis moving component 2 and the Y-axis moving component 3 to automatically align the bending die 7 on the surface of the processing table 4 with the bending punch 6. The automatic alignment is based on the control of the visual sensor and the displacement sensor. This is a prior art and is not specifically disclosed. After the bending die 7 and the bending punch 6 are positioned, the staff manually operates the PLC controller 12 to start the second hydraulic cylinder 131 and the third hydraulic cylinder 133. The second hydraulic cylinder 131 drives the moving seat 132 to move smoothly. At the same time, the third hydraulic cylinder 133 responds quickly and drives the organic solvent storage tank 111 and the nylon cleaning brush 115 to move synchronously. Under the coordinated operation of the two, the nylon cleaning brush 115 is accurately transported to the surface of the sheet metal. When the nylon cleaning brush 115 reaches the predetermined position, the PLC controller 12 automatically stops the second hydraulic cylinder 131 and immediately starts the liquid pump 113. The liquid pump 113 operates to quickly extract the organic solvent in the organic solvent storage tank 111. The organic solvent is evenly sprayed inside the nylon cleaning brush 115 through the liquid outlet 116. At this time, the third hydraulic cylinder 133 continues to exert force to drive the nylon cleaning brush 115 soaked in the organic solvent to perform detailed cleaning on the sheet metal surface. The nylon cleaning brush 115 cooperates with the organic solvent to efficiently dissolve and remove oil and impurities on the sheet metal surface, ensuring that the sheet metal surface meets the cleaning requirements of the subsequent bending process. In the process of cleaning the surface of the sheet metal, the staff manually operates the PLC controller 12 to start the semiconductor temperature control rod 81 and the exhaust fan 92 and open the solenoid valve 102. The heating end of the semiconductor temperature control rod 81 is located inside the bending die 7. After the current is passed through the semiconductor temperature control rod 81, the hot end generates heat and the cold end generates cooling, so that the internal gas of the bending die 7 can be heated. At this time, the exhaust fan 92 can discharge the hot air inside the bending die 7 into the inside of the hollow blowing plate 93 through the air outlet pipe 91, and then blow it to the surface of the sheet metal through multiple blowing holes 94 with a stable and soft airflow. At the same time, the air inlet pipe 101 at the other end of the bending die 7 discharges the external gas and filters the gas through the activated carbon filter 104 inside the filter. The hot air acts on the oil on the surface of the sheet metal, quickly increases the temperature of the oil, greatly reduces its viscosity, and significantly enhances its fluidity, thereby greatly improving the effect of subsequent cleaning of the oil, creating favorable conditions for efficiently and thoroughly cleaning the oil on the surface of the sheet metal. After the cleaning is completed, the power supply of the clamp on the surface of the processing table 4 is disconnected, so that the clamp automatically retracts to release the fixation of the sheet metal, and the staff manually operates the PLC controller 12 to control the cleaning mechanism 11 to reset. At the same time, the hot air can also dry the surface of the sheet metal. Then, the PLC controller 12 is operated to start the first hydraulic cylinder 5. The first hydraulic cylinder 5 extends to drive the bending punch 6 to move downward and cooperate with the bending die 7 to complete the bending of the sheet metal. During the bending process, since the interior of the bending die 7 has been heated, a large amount of heat is accumulated in the bending die 7. When the sheet metal enters the bending area, the heat in the bending die 7 is quickly transferred to the bending part of the sheet metal through the heat conduction plate 82, so that the bending part of the sheet metal can be heated. The increased temperature makes the atomic activity of the material enhanced, and the bonding force between atoms is relatively weakened. The plasticity of the material is greatly improved, which means that when the sheet metal is subjected to the bending force, it can be more evenly and smoothly plastically deformed, effectively avoiding the stress concentration caused by insufficient local deformation capacity. On the other hand, as the temperature rises, the yield strength of the material decreases. Under the same bending force, the material is more likely to reach the yield state and produce plastic flow, thereby avoiding the occurrence of cracks and tears, effectively ensuring the bending quality of the sheet metal. At the same time, the exhaust fan 92 always maintains a stable and continuous operating state. The hot air drawn from the inside of the bending die 7 is driven by the strong wind of the exhaust fan 92 and blows continuously to the surface of the sheet metal. These continuously blowing hot air accurately acts on the bending part of the sheet metal, so that the surface of this area is continuously heated, thereby further improving the bending quality and ensuring the processing accuracy and reliability of the sheet metal. During the bending process, since the sensing end of the impact-resistant temperature sensor 83 inside the bending die 7 is always in real-time contact with the bending part of the sheet metal, with its excellent impact resistance, it can still stably and accurately detect the temperature of the bending part when it is subjected to the strong mechanical impact and vibration generated during the bending process. The impact-resistant temperature sensor 83 then feeds back the detected temperature value to the PLC controller 12, and the PLC controller 12 adaptively adjusts the heating temperature of the semiconductor temperature control rod 81 according to the detected temperature value. Through this real-time monitoring, it can effectively avoid the degradation of the material structure performance due to excessively high temperature of the bending part, or the insufficient toughness and increased brittleness of the material due to excessively low temperature, thereby reducing the risk of cracks and tears, ensuring that the bending process is carried out smoothly under ideal temperature conditions, and comprehensively guaranteeing the quality and accuracy of sheet metal bending; After the sheet metal is bent, the PLC controller 12 automatically controls the bending punch 6 to move upward and separate from the sheet metal. At this time, the PLC controller 12 immediately changes the direction of the current to the semiconductor temperature control rod 81 through the control circuit. Based on the Peltier effect of the semiconductor, the semiconductor temperature control rod 81 immediately changes its function. The heating end originally located inside the bending die 7 quickly switches to a cooling state, while the rear end located outside the bending die 7 becomes the heating end accordingly. In this process, one end of the semiconductor temperature control rod 81 in a cooling state quickly absorbs the heat of the gas inside the bending die 7, thereby achieving efficient cooling of the gas in the die. Then, the cooled gas is cooled by heat conduction. The cold air is transferred to the heat conducting plate 82 which is in close contact with the die, and the heat conducting plate 82 quickly transfers the cold air to the bending part of the sheet metal, thereby realizing effective cooling of the bending part of the sheet metal. At the same time, the blower mechanism 9 switches from the hot air that is continuously blown to the surface of the sheet metal to the cold air mode, and the cold air is evenly blown on the upper surface of the bending part of the sheet metal, further accelerating the heat dissipation. Through the synergistic effect of gas refrigeration in the die, cold air conducted by the heat conducting plate 82, and cold air blown by the blower mechanism 9, the bending part of the sheet metal can be cooled and cooled in an all-round and efficient manner, ensuring that the bent sheet metal is quickly stabilized at a suitable temperature, effectively improving the dimensional accuracy and structural stability of the sheet metal parts, and optimizing the overall processing quality. During the continuous operation of the blower mechanism 9 and the delivery of gas to the sheet metal surface, the activated carbon filter 104 inside the filter cartridge 103 continues to play a role and efficiently filters impurities in the gas. As time goes by, the surface of the activated carbon filter 104 continuously absorbs impurities, and the number of impurities accumulated gradually increases. The large amount of impurities accumulated changes the permeability of the filter, causing a difference in the gas flow on both sides of the activated carbon filter 104. At this time, the first gas flow meter 106 and the second gas flow meter 107 installed on both sides of the activated carbon filter 104 begin to play a real-time monitoring function, accurately detecting the size changes of the airflow on both sides, and the detection data will be transmitted to the PLC controller 12 in real time. When the difference between the values ​​detected by the first gas flow meter 106 and the second gas flow meter 107 reaches a threshold value preset in the PLC controller 12, the PLC controller 12 responds quickly and immediately activates its built-in alarm to promptly remind the staff that the activated carbon filter 104 has absorbed a large amount of impurities and needs to be disassembled and replaced to ensure the purity of the gas delivered by the blower mechanism 9. When the sheet metal is cooled, the staff manually operates the PLC controller 12 to start the X-axis moving component 2 and the Y-axis moving component 3 to move the sheet metal on the surface of the processing table 4 outward, and then removes the bent sheet metal.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-precision sheet metal multi-axis linkage CNC bending machine, comprising a frame (1), an X-axis moving assembly (2), a Y-axis moving assembly (3) and a processing table (4), wherein the X-axis moving assembly (2) is arranged at the bottom of the frame (1), the Y-axis moving assembly (3) is arranged at the top of the X-axis moving assembly (2), and the processing table (4) is arranged at the top of the Y-axis moving assembly (3), characterized in that: Also includes: A first hydraulic cylinder (5) is fixedly arranged on the top of the frame (1), and a bending punch (6) is fixedly arranged on the movable end of the first hydraulic cylinder (5), and a bending die (7) is fixedly embedded on the top of the processing table (4); A temperature control mechanism (8) is arranged inside the bending die (7), and the temperature control mechanism (8) is used to heat the inside of the bending die (7); A blower mechanism (9) is arranged at one end of the bending die (7), and the blower end of the blower mechanism (9) extends to the upper surface of the processing table (4); a filter mechanism (10) is arranged at the other end of the bending die (7); A cleaning mechanism (11) is arranged on a side wall of the frame (1), and the cleaning mechanism (11) is located above the processing table (4); A PLC controller (12) is fixedly mounted on a side wall of the frame (1); the X-axis moving assembly (2), the Y-axis moving assembly (3), the first hydraulic cylinder (5), the temperature control mechanism (8), the blower mechanism (9), the filter mechanism (10) and the cleaning mechanism (11) are all electrically connected to the PLC controller (12).

2. The high-precision sheet metal multi-axis linkage CNC bending machine according to claim 1 is characterized in that: The temperature control mechanism (8) comprises a plurality of semiconductor temperature control rods (81) which are fixedly arranged at an angle on both sides of the bending die (7); the bending die (7) has a hollow structure; one end of each of the plurality of semiconductor temperature control rods (81) extends to the inside of the bending die (7); and the other end of each of the plurality of semiconductor temperature control rods (81) extends to below the processing table (4); a heat conducting plate (82) is fixedly embedded in the inside of the bending die (7); and two impact-resistant temperature sensors (83) are symmetrically fixedly embedded on the surface of the heat conducting plate (82).

3. The high-precision sheet metal multi-axis linkage CNC bending machine according to claim 2 is characterized in that: The air blowing mechanism (9) comprises an air outlet pipe (91) fixedly arranged at one end of the bending die (7), an exhaust fan (92) fixedly arranged at one end of the air outlet pipe (91) away from the bending die (7), a hollow air blowing plate (93) fixedly arranged transversely at the air outlet end of the exhaust fan (92), and a plurality of evenly distributed air blowing holes (94) are provided on one side of the hollow air blowing plate (93).

4. The high-precision sheet metal multi-axis linkage CNC bending machine according to claim 3 is characterized in that: The filtering mechanism (10) comprises an air inlet pipe (101) fixedly arranged at the other end of the bending die (7), a solenoid valve (102) and a filter cartridge (103) being fixedly arranged on the wall of the air inlet pipe (101), and an activated carbon filter screen (104) being arranged inside the filter cartridge (103).

5. The high-precision sheet metal multi-axis linkage CNC bending machine according to claim 4 is characterized in that: The filter cartridge (103) is composed of two threadedly connected cylinders (105), and a first gas flow meter (106) and a second gas flow meter (107) are fixedly disposed on the inner wall of the filter cartridge (103) and located on both sides of the activated carbon filter screen (104).

6. The high-precision sheet metal multi-axis linkage CNC bending machine according to claim 5 is characterized in that: The cleaning mechanism (11) comprises an organic solvent storage tank (111), a driving mechanism (13) is provided between the organic solvent storage tank (111) and a side wall of the frame (1), an isolation plate (112) is fixedly provided inside the organic solvent storage tank (111), a liquid extraction pump (113) is fixedly provided on the upper surface of the isolation plate (112), a liquid extraction pipe (114) extending to the bottom of the isolation plate (112) is fixedly provided at the output end of the liquid extraction pump (113), a nylon cleaning brush (115) is fixedly provided at the bottom of the organic solvent storage tank (111), and a plurality of evenly distributed liquid outlet holes (116) are provided at the bottom of the organic solvent storage tank (111).

7. The high-precision sheet metal multi-axis linkage CNC bending machine according to claim 6 is characterized in that: The driving mechanism (13) comprises a second hydraulic cylinder (131) fixedly arranged inside one side of the frame (1); a moving seat (132) is fixedly arranged at a moving end of the second hydraulic cylinder (131); a third hydraulic cylinder (133) is fixedly arranged on a side wall of the moving seat (132); and a moving end of the third hydraulic cylinder (133) is fixedly connected to the top of the organic solvent storage tank (111).

8. A method for using a high-precision sheet metal multi-axis linkage CNC bending machine as claimed in claim 7, characterized in that: The method of use includes the following steps: S1: placing the sheet metal and positioning the mold, placing the sheet metal to be processed on the surface of the processing table (4), aligning the bending portion of the sheet metal with the bending die (7) below, and operating the PLC controller (12) to start the X-axis moving component (2) and the Y-axis moving component (3) to automatically align the bending die (7) on the surface of the processing table (4) with the bending punch (6); S2: cleaning the surface of the sheet metal. After the bending die (7) and the bending punch (6) are positioned, the second hydraulic cylinder (131) and the third hydraulic cylinder (133) are started to work through the PLC controller (12), driving the organic solvent storage tank (111) and the nylon cleaning brush (115) to move synchronously, so that the nylon cleaning brush (115) reaches the surface of the sheet metal. At this time, the PLC controller (12) stops the second hydraulic cylinder (131) and starts the liquid pump (113). The liquid pump (113) sprays the organic solvent in the organic solvent storage tank (111) onto the inside of the nylon cleaning brush (115) through the liquid outlet (116). The third hydraulic cylinder (133) drives the nylon cleaning brush (115) to clean oil stains and impurities on the surface of the sheet metal. S3: auxiliary cleaning and preheating: while cleaning the surface of the sheet metal, the semiconductor temperature control rod (81) and the exhaust fan (92) are started by operating the PLC controller (12), and the solenoid valve (102) is opened, so that the semiconductor temperature control rod (81) heats the internal gas of the bending die (7), and the exhaust fan (92) discharges the hot gas into the hollow blowing plate (93) through the air outlet pipe (91), and then blows the hot gas toward the surface of the sheet metal through the air blowing hole (94), and the air inlet pipe (101) at the other end of the bending die (7) sucks in external gas, which is filtered by the activated carbon filter (104) and then participates in the air circulation; S4: Bending operation, the cleaning mechanism (11) is reset by the PLC controller (12), and the surface of the sheet metal is dried by hot air. Then, the first hydraulic cylinder (5) is started by the PLC controller (12), and the first hydraulic cylinder (5) is extended to drive the bending punch (6) to move downward, and cooperate with the bending die (7) to complete the bending of the sheet metal. During the bending process, the heat in the bending die (7) is transferred to the bending part of the sheet metal through the heat conduction plate (82). At the same time, the impact-resistant temperature sensor (83) monitors the temperature of the bending part in real time and feeds back the data to the PLC controller (12). The PLC controller (12) adaptively adjusts the heating temperature of the semiconductor temperature control rod (81).

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