A kind of bending equipment for processing vehicle-mounted inverter sheet metal frame

Abstract

The application discloses a kind of bending equipment for vehicle-mounted inverter sheet metal frame processing, and the application relates to the bending technical field.The vehicle-mounted inverter sheet metal frame processing bending equipment, including body, pressing mechanism, lower die mechanism, feeding mechanism, pressing mechanism includes lifter and bending pressure head, the surface of bending pressure head and the side away from bar-shaped tablet tooth is fixedly connected with bending extrusion piece, lower die mechanism includes regulator, right-angle base and lower die, the side of the surface of lower die is slidably installed with secondary pressing piece, the side of the top of lower die is fixedly connected with right-angle limiting piece, the inner side surface of secondary pressing piece and the surface of lower die are fixedly connected with reset elastic sheet, the purpose of preventing rebound is achieved, pretreatment can be performed, warping is less likely to occur, bending is fully performed, rebound amount is reduced, bending effect is good, and the device is safe and reliable.

Description

Technical Field

[0001] This invention relates to the field of bending technology, and in particular to a bending device for processing sheet metal frames for vehicle inverters. Background Technology

[0002] With the continuous development of technology and the rapid progress of society, automobiles are increasingly used in daily life. The vehicle inverter is one of the important electronic devices in a car. A vehicle inverter is a power electronic device that converts the 12-volt or 24-volt voltage of a car battery into 220-volt, 50Hz standard AC power, allowing household and office appliances to be used in a moving vehicle. Common interfaces include national standard sockets and USB fast charging ports. The sheet metal frame housing of vehicle inverters is mostly made of thin metal sheets. During the manufacturing process of vehicle inverters, the sheet metal frame housing needs to be bent, therefore, bending equipment is required.

[0003] For example, Chinese Patent Publication No. CN118699134A discloses a sheet metal processing equipment and its usage method, including a frame, which is a rectangular frame structure. A processing plane is provided on the frame, and a support frame is provided on the frame. The support frame is a portal frame, and the processing plane corresponds to the center line of the support frame. A plurality of positioning grooves are provided on the processing plane, and a lower die is assembled on the plurality of positioning grooves. A stamping upper die is assembled on the changing bracket, and a plurality of sleeve holes matching a plurality of connecting columns are opened on the stamping upper die. A plurality of first limiting bolts are threadedly connected to the plurality of connecting columns and limit them on the stamping upper die. The upper die is replaced according to the processing requirements. The upper die is divided into a stamping upper die and a bending upper die, which are used for stamping and bending processing of the workpiece, respectively.

[0004] In existing technical references, sheet metal parts can be bent by the combined action of upper and lower stamping dies. However, this design is prone to warping at the edges of thin sheet metal, making it inconvenient to pre-treat the edges of thin sheet metal. Furthermore, after the sheet metal part is bent, the inside is under pressure and the outside is under tension, and there is both plastic deformation and elastic deformation inside, resulting in a large amount of springback, which affects the bending effect. Summary of the Invention

[0005] To solve the above technical problems, the present invention is implemented through the following technical solution: A bending device for processing sheet metal frames of vehicle inverters, comprising: The machine body, and the feeding mechanism installed on the surface of the machine body; The pressing mechanism includes a lifting device and a bending head. The lifting device is fixedly installed on the top of the machine body. The top of the bending head is fixedly installed with the telescopic end of the lifting device. Both ends of the bottom of the bending head have beveled notches. A pusher block is slidably installed at the beveled notches on the surface of the bending head. A bending spring is fixedly connected between the end of the pusher block and the outer end of the bending head. A strip-shaped pressing tooth is fixedly connected to the middle of the surface of the bending head. The surface of the bending head is further away from the strip-shaped pressing tooth. One side is fixedly connected to a bending extrusion component. The bending head moves downward and, with the connection of the bending spring, the pusher block moves downward together. The bending spring is compressed and contacts the corner of the sheet metal frame of the vehicle inverter that needs to be bent through the bottom of the pusher block. As the pusher block continues to move downward, combined with the action and reaction forces, the sheet exerts a reverse force on the pusher block, which causes the two symmetrical pusher blocks to move outward, thereby pressing down and flattening the raised corner of the sheet to avoid the edge warping. Furthermore, the pusher block is embedded into the position of the beveled notch to form a fit, and the sheet is bent together by the bending pressure head and the pusher block; The lower die mechanism includes an adjuster, a right-angle base, and a lower die. The adjuster is installed at the bottom of the machine body cavity. The right-angle base and the lower die are both installed on the rotating end of the adjuster. A cylindrical roller is rolled at the bending opening at the top of the lower die. A secondary pressing component is slidably installed on the side of the lower die surface. A right-angle limiting component is fixedly connected to the side of the top of the lower die. A reset elastic sheet is fixedly connected between the inner side of the secondary pressing component and the surface of the lower die. The sheet is limited by two symmetrical right-angle limiting components to prevent the sheet from shifting or tilting. As the bending head moves downward and is supported by the lower die, the bottom end of the bending head bends the sheet at the bending opening at the top of the lower die, causing the sheet to bend and deform. At the same time, when the sheet deforms, the symmetrical cylindrical rollers on both sides roll with the deformation of the sheet. The rolling friction between the cylindrical rollers and the sheet reduces scratches on the sheet surface and makes it less prone to scratches.

[0006] Furthermore, there are two lifting devices, both of which are installed vertically, and the bending pressure head is installed directly below the lifting device and is installed horizontally.

[0007] Furthermore, there are two pusher blocks, and the two pusher blocks are symmetrically installed along the bending head.

[0008] Furthermore, both the right-angle base and the lower mold are installed horizontally, with the lower mold installed directly below the bending head and the right-angle base installed directly below the lower mold.

[0009] By moving the bending head downwards, the bending head will drive the bending extrusion part downwards as well. The inclined surface at the bottom of the bending extrusion part contacts the wedge-shaped surface on the side of the secondary pressing part, so that the secondary pressing part is subjected to the extrusion force in the direction of the downward die. This allows the secondary pressing part to slide into the downward die, and the reset elastic sheet undergoes elastic deformation after being extruded. The pressing point on the surface of the secondary pressing part applies pressure to the bending side of the sheet, and the secondary pressure on the bending side of the sheet can reduce the springback of the formed vehicle inverter sheet metal frame and avoid excessive springback. After the sheet metal frame of the vehicle inverter is bent, the retraction of the lifting device's telescopic end applies an upward pulling force to the bending head, causing it to move upward. The bending extrusion component moves upward along with the bending head, separating it from the secondary pressing component. This releases the pressure exerted by the bending extrusion component on the secondary pressing component. Under the elastic force of the reset elastic plate, the secondary pressing component moves outward to reset, preparing for subsequent operation. Furthermore, there are two cylindrical rollers, and the two cylindrical rollers are symmetrically installed along the bending opening at the top of the lower mold, and the reset elastic sheet is installed at an angle.

[0010] Furthermore, the regulator includes a support platform, the bottom of which is fixedly installed to the bottom of the inner cavity of the machine body. A linear actuator is fixedly installed on the side of the top of the support platform. A rotary actuator is fixedly installed at the output end of the linear actuator. A connecting turntable is fixedly installed at the output end of the rotary actuator. The lower mold is fixedly installed on the top of the surface of the connecting turntable. The right-angle base is fixedly installed on the bottom of the surface of the connecting turntable. When it is necessary to press the edge of the bent sheet metal frame, the bent sheet metal frame can be moved to the top of the right-angle base. By using the extension of the telescopic end of the lifting device, the bending pressure head drives the strip pressing teeth to move downward. Since the bent sheet metal frame to be pressed is between the right-angle base and the strip pressing teeth, the sheet metal frame can be pressed by the pressing pressure of the strip pressing teeth for further processing.

[0011] Furthermore, there are two linear actuators, and the two linear actuators are symmetrically installed along the central axis in the middle of the support platform, and the rotator is installed vertically.

[0012] Furthermore, the feeding mechanism includes a feeding platform and a strip groove. The feeding platform is fixedly installed on the surface of the machine body and close to the lower mold. The strip groove is opened on the top side of the feeding platform. An electric telescopic rod is fixedly installed on the bottom side of the feeding platform. A C-shaped connecting slider is fixedly connected to the edge of the surface of the feeding platform. A U-shaped pusher is fixedly installed at the top of the C-shaped connecting slider. A cylindrical notch is opened at the corner of the inner side of the U-shaped pusher. The sheet metal frame of the vehicle inverter is pushed and fed by the movement of the U-shaped pusher, and the corner of the sheet metal frame of the vehicle inverter is embedded in the cylindrical notch on the inner side of the U-shaped pusher, which limits the position of the sheet metal frame of the vehicle inverter. The bottom of the sheet metal frame of the vehicle inverter contacts the strip groove evenly distributed on the top of the feeding platform, so that the sheet metal frame of the vehicle inverter will not slip when it is pushed and fed, thus ensuring accurate feeding. Once the material is loaded, the retraction of the electric telescopic rod's extension end applies a pulling force to the C-shaped connecting slider. The C-shaped connecting slider then moves the U-shaped pusher outward to reset, allowing for subsequent loading.

[0013] Furthermore, the bottom of the surface of the C-shaped connecting slider is fixedly installed with the telescopic end of the electric telescopic rod. There are two C-shaped connecting sliders, and the two C-shaped connecting sliders are symmetrically installed along the feeding platform.

[0014] Furthermore, the U-shaped pusher is installed directly above the feeding platform, and the strip grooves are evenly distributed on the side of the top of the feeding platform, with the opening of the U-shaped pusher facing the strip grooves.

[0015] The beneficial effects of the technical solution provided by this invention include: 1. By moving the bending pressure head downwards and connecting it with the bending spring, the pusher block moves downwards together. The bending spring is compressed and undergoes elastic deformation. The bottom of the pusher block contacts the corner of the sheet metal frame of the vehicle inverter that needs to be bent. As the pusher block continues to move downwards, combined with the action and reaction forces, the sheet exerts a reverse force on the pusher block, causing the two symmetrical pusher blocks to move outwards. This presses down and flattens the raised corner of the sheet, preventing the edge from warping.

[0016] Second, the sheet material is limited by two symmetrical right-angle limiting parts to prevent it from shifting or tilting. As the bending head moves downward and is supported by the lower die, the bottom of the bending head bends the sheet material at the bending opening at the top of the lower die, causing the sheet material to bend and deform. At the same time, as the sheet material deforms, the symmetrical cylindrical rollers on both sides roll along with the sheet material. The rolling friction between the cylindrical rollers and the sheet material reduces scratches on the sheet material surface and makes it less likely to develop scratches.

[0017] Third, by utilizing the inclined surface at the bottom of the bent extrusion part to contact the wedge-shaped surface on the side of the secondary pressing part, the secondary pressing part is subjected to extrusion force in the direction of downward die inclination, which allows the secondary pressing part to slide into the lower die. Furthermore, the pressing point on the surface of the secondary pressing part applies pressure to the bending side of the sheet, thus applying pressure to the bending side of the sheet a second time. This reduces the springback of the formed vehicle inverter sheet metal frame and avoids excessive springback.

[0018] 4. Move the bent sheet metal frame to the top of the right-angle base, and use the extension of the lifting device's telescopic end to make the bending pressure head drive the strip pressing teeth to move downward. With the bent sheet metal frame that needs to be pressed between the right-angle base and the strip pressing teeth, the sheet metal frame can be pressed by the pressing pressure of the strip pressing teeth, and further processed.

[0019] 5. The sheet metal frame of the vehicle inverter is pushed and fed by the movement of the U-shaped pusher, and the corners of the sheet metal frame are embedded into the cylindrical notches on the inner side of the U-shaped pusher, which limits the position of the sheet metal frame. The bottom of the sheet metal frame contacts the strip grooves evenly distributed on the top of the feeding table, so that the sheet metal frame will not slip when it is pushed and fed, thus ensuring accurate feeding. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a bending device for processing sheet metal frames of a vehicle inverter, provided in an embodiment of the present invention. Figure 2 This is a bottom view structural diagram of a bending device for processing sheet metal frames of a vehicle inverter, provided in an embodiment of the present invention. Figure 3 This is a schematic diagram of the connection structure between the pressing mechanism and the machine body provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the overall structure of the pressing mechanism provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the internal structure of the fuselage cross section provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the overall structure of the lower mold mechanism provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the right-angled base structure from below, provided in an embodiment of the present invention. Figure 8 This is a schematic diagram of the internal structure of the lower mold cross-section provided in an embodiment of the present invention; Figure 9 This is a schematic diagram of the connection structure between the feeding mechanism and the machine body provided in an embodiment of the present invention.

[0021] In the diagram: 1. Machine body; 2. Feeding mechanism; 3. Pressing mechanism; 4. Lower die mechanism; 31. Lifting device; 32. Bending head; 33. Angled notch; 34. Bending spring; 35. Pushing block; 36. Strip pressing tooth; 37. Bending extrusion part; 41. Adjuster; 42. Right-angle base; 43. Lower die; 44. Cylindrical roller; 45. Secondary pressing part; 46. Right-angle limit part; 47. Reset elastic plate; 411. Support platform; 412. Linear actuator; 413. Rotator; 414. Connecting turntable; 21. Discharging platform; 22. Strip groove; 23. Electric telescopic rod; 24. C-shaped connecting slider; 25. U-shaped pusher; 26. Cylindrical notch. Detailed Implementation

[0022] Example 1, see Figures 1-8 A technical solution is provided: A bending device for processing sheet metal frames of vehicle inverters, comprising: The machine body 1, and the feeding mechanism 2 installed on the surface of the machine body 1; The pressing mechanism 3 includes a lifting device 31 and a bending head 32. The lifting device 31 is fixedly installed on the top of the surface of the machine body 1. The top of the bending head 32 is fixedly installed with the telescopic end of the lifting device 31. Both ends of the bottom of the bending head 32 are provided with inclined notches 33. A pusher block 35 is slidably installed at the position of the inclined notch 33 on the surface of the bending head 32. A bending spring 34 is fixedly connected between the end of the pusher block 35 and the outer end of the bending head 32. A strip-shaped pressing tooth 36 is fixedly connected to the middle of the surface of the bending head 32. A bending extrusion member 37 is fixedly connected to the surface of the bending head 32 away from the strip-shaped pressing tooth 36. When the lifting device 31 is turned on, it can apply a downward pushing force to the bending head 32 by extending the telescopic end of the lifting device 31, so that the bending head 32... Moving downwards allows for adjustment of the height of the bending head 32, facilitating subsequent bending of the vehicle inverter sheet metal frame. The bending head 32 moves downwards, and with the connection of the bending spring 34, the pusher block 35 moves downwards as well. The bottom of the pusher block 35 contacts the corner of the vehicle inverter sheet metal frame that needs bending. As the pusher block 35 continues to move downwards, combined with action and reaction forces, the sheet exerts a counterforce on the pusher block 35, causing the two symmetrical pusher blocks 35 to move outwards. This presses down and flattens the raised corner of the sheet, preventing warping. The pusher block 35 then fits into the beveled notch 33, and the bending head 32 and pusher block 35 together bend the sheet. There are two lifting devices 31, both of which are installed vertically. The bending pressure head 32 is installed directly below the lifting devices 31 and is installed horizontally.

[0023] There are two pusher blocks 35, and the two pusher blocks 35 are installed symmetrically along the bending head 32.

[0024] By moving the bending head 32 downwards, the bending head 32 will drive the bending extrusion part 37 downwards as well. The inclined surface at the bottom of the bending extrusion part 37 contacts the wedge-shaped surface on the side of the secondary pressing part 45, so that the secondary pressing part 45 is subjected to the extrusion force in the direction of the downward die 43. This allows the secondary pressing part 45 to slide into the downward die 43, and the reset elastic sheet 47 undergoes elastic deformation after being extruded. The pressing point on the surface of the secondary pressing part 45 applies pressure to the bending side of the sheet, and the secondary pressure on the bending side of the sheet can reduce the springback of the formed vehicle inverter sheet metal frame and avoid excessive springback.

[0025] After the sheet metal frame of the vehicle inverter is bent, the retraction of the telescopic end of the lifting device 31 applies an upward pulling force to the bending head 32, causing the bending head 32 to move upward. The bending extrusion component 37 moves upward along with the bending head 32, separating the bending extrusion component 37 from the secondary pressing component 45. This releases the extrusion pressure of the bending extrusion component 37 on the secondary pressing component 45. Under the elastic force of the reset elastic plate 47, the secondary pressing component 45 moves outward to reset, so that it can be operated again in the future.

[0026] The lower mold mechanism 4 includes an adjuster 41, a right-angle base 42, and a lower mold 43. The adjuster 41 is installed at the bottom of the inner cavity of the machine body 1. The right-angle base 42 and the lower mold 43 are both installed on the rotating end of the adjuster 41. A cylindrical roller 44 is rolled at the bending opening at the top of the lower mold 43. A secondary pressing component 45 is slidably installed on the side of the surface of the lower mold 43. A right-angle limiting component 46 is fixedly connected to the side of the top of the lower mold 43. A reset elastic sheet 47 is fixedly connected between the inner side of the secondary pressing component 45 and the surface of the lower mold 43. When the sheet metal frame material of the vehicle inverter that needs to be bent moves to... When the sheet material is at the top of the lower mold 43, the edge of the sheet material is in contact with the inner side of the right-angle limiting member 46 at the top of the lower mold 43. The sheet material is limited by two symmetrical right-angle limiting members 46 to prevent the sheet material from shifting or tilting. As the bending head 32 moves downward, and is supported by the lower mold 43, the bottom end of the bending head 32 bends the sheet material at the bending opening at the top of the lower mold 43, causing the sheet material to bend and deform. At the same time, when the sheet material is deformed, the symmetrical cylindrical rollers 44 on both sides will roll along with the deformation of the sheet material. The rolling friction between the cylindrical rollers 44 and the sheet material makes it less likely to have scratches.

[0027] The regulator 41 includes a support platform 411, the bottom of which is fixedly installed to the bottom of the inner cavity of the machine body 1. A linear driver 412 is fixedly installed on the side of the top of the support platform 411. A rotary device 413 is fixedly installed at the output end of the linear driver 412. A connecting turntable 414 is fixedly installed at the output end of the rotary device 413. A lower mold 43 is fixedly installed on the top of the surface of the connecting turntable 414. A right-angle base 42 is fixedly installed on the bottom of the surface of the connecting turntable 414.

[0028] Example 2, based on Example 1, see [link / reference] Figures 1 to 8 A technical solution is provided: Both the right-angle base 42 and the lower mold 43 are installed horizontally. The lower mold 43 is installed directly below the bending head 32, and the right-angle base 42 is installed directly below the lower mold 43.

[0029] There are two cylindrical rollers 44, and the two cylindrical rollers 44 are symmetrically installed along the bending opening at the top of the lower mold 43, and the reset elastic sheet 47 is installed at an angle.

[0030] After the bending head 32 moves upward and resets, it separates from the lower mold 43. The operator then starts the linear actuator 412, using its output to move the rotary device 413 to the middle of the machine body 1. The linear actuator 412 is then paused, and the rotary device 413 is restarted. The output of the rotary device 413 rotates counter-clockwise, causing the connecting turntable 414 to rotate counter-clockwise. This causes the right-angle base 42 and the lower mold 43 to rotate 180 degrees counter-clockwise. The rotary device 413 is then paused, and the right-angle base 42 changes from an L-shape to a vertical right angle, while the lower mold 43 rotates downwards. The linear actuator 412 is then restarted. 12. The linear actuator 412 drives the rotary actuator 413 to move directly below the bending extrusion piece 37. When the top of the right-angle base 42 is flat and directly facing the strip pressing tooth 36, the right-angle base 42 is directly below the strip pressing tooth 36. The linear actuator 412 is paused again. When it is necessary to press the edge of the bent sheet metal frame, the bent sheet metal frame can be moved to the top of the right-angle base 42, and the lifting device 31 is turned on again. The extension of the telescopic end of the lifting device 31 causes the bending pressure head 32 to drive the strip pressing tooth 36 to move downward. The bent sheet metal frame that needs to be pressed is between the right-angle base 42 and the strip pressing tooth 36. The pressing pressure of the strip pressing tooth 36 can then be used to press the sheet metal frame for further processing.

[0031] There are two linear actuators 412, and the two linear actuators 412 are symmetrically installed along the central axis in the middle of the support platform 411, and the rotator 413 is installed vertically.

[0032] Example 3, based on Examples 1 and 2, see [reference] Figures 1 to 9 A technical solution is provided: The feeding mechanism 2 includes a feeding platform 21 and a strip groove 22. The feeding platform 21 is fixedly installed on the surface of the machine body 1 and close to the lower mold 43. The strip groove 22 is opened on the top side of the feeding platform 21. An electric telescopic rod 23 is fixedly installed on the bottom side of the feeding platform 21. A C-shaped connecting slider 24 is fixedly connected to the edge of the surface of the feeding platform 21. A U-shaped pusher 25 is fixedly installed at the top of the C-shaped connecting slider 24. A cylindrical notch 26 is opened at the corner of the inner side of the U-shaped pusher 25. The sheet metal frame of the vehicle inverter that needs to be bent is placed on the top of the feeding platform 21 by an external robotic arm. The electric telescopic rod 23 is activated to start working. The extension of the electric telescopic rod 23 can apply a pushing force to the C-shaped connecting slider 24. The C-shaped connecting slider 24 drives the U-shaped pusher 25 to move together towards the lower mold 43. The bottom of the C-shaped connecting slider 24 is fixedly installed with the telescopic end of the electric telescopic rod 23. There are two C-shaped connecting sliders 24, and the two C-shaped connecting sliders 24 are symmetrically installed along the feeding table 21. The vehicle inverter sheet metal frame material is pushed and fed by the movement of the U-shaped pusher 25, so that the corner of the vehicle inverter sheet metal frame material is embedded in the cylindrical notch 26 on the inner side of the U-shaped pusher 25, which limits the vehicle inverter sheet metal frame material. The bottom of the vehicle inverter sheet metal frame material contacts the strip grooves 22 evenly distributed on the top of the feeding table 21, so that the vehicle inverter sheet metal frame material will not slip when it is pushed and fed, thus ensuring accurate feeding. The U-shaped pusher 25 is installed directly above the feeding platform 21. The strip grooves 22 are evenly distributed on the top side of the feeding platform 21. The opening of the U-shaped pusher 25 faces the strip grooves 22. After feeding is completed, the extension end of the electric telescopic rod 23 is retracted to apply a pulling force to the C-shaped connecting slider 24. The C-shaped connecting slider 24 drives the U-shaped pusher 25 to move outward together to reset, so that feeding can be carried out again later.

[0033] In use, in the initial state, the lower mold 43 is directly below the bending head 32. First, the sheet metal frame of the vehicle inverter that needs to be bent is placed on the top of the feeding table 21 by the external equipment robot arm, and the electric telescopic rod 23 is turned on to start working. By extending the electric telescopic rod 23, a pushing force can be applied to the C-shaped connecting slider 24. The C-shaped connecting slider 24 drives the U-shaped pusher 25 to move together towards the lower mold 43. Furthermore, the sheet metal frame of the vehicle inverter will be pushed and fed by the movement of the U-shaped pusher 25, and the corner of the sheet metal frame of the vehicle inverter will be embedded into the cylindrical notch 26 on the inner side of the U-shaped pusher 25 to limit the position of the sheet metal frame of the vehicle inverter. The bottom of the sheet metal frame of the vehicle inverter will contact the strip grooves 22 evenly distributed on the top of the feeding table 21, so that the sheet metal frame of the vehicle inverter will not slip off at will when it is pushed and fed. Meanwhile, when the sheet metal frame of the vehicle inverter that needs to be bent is moved to the top of the lower mold 43, the edge of the sheet is attached to the inner side of the right-angle limiting piece 46 at the top of the lower mold 43, and the sheet is limited by two symmetrical right-angle limiting pieces 46 to prevent the sheet from shifting or tilting. At this time, by retracting the telescopic end of the electric telescopic rod 23, a pulling force can be applied to the C-shaped connecting slider 24. The C-shaped connecting slider 24 drives the U-shaped pusher 25 to move outward together to reset, so that the material can be fed again in the future. The operator starts the lifting device 31 to work. By extending the telescopic end of the lifting device 31, a downward pushing force can be applied to the bending head 32, causing the bending head 32 to move downward. This allows for adjustment of the height of the bending head 32, which is helpful for subsequent bending of the sheet metal frame of the vehicle inverter. As the bending head 32 moves downward, and with the connection of the bending spring 34, the pusher block 35 moves downward as well. The bottom of the pusher block 35 contacts the corner of the sheet metal frame of the vehicle inverter that needs to be bent. As the pusher block 35 continues to move downward, combined with the action and reaction forces, the sheet exerts a counterforce on the pusher block 35, causing the two symmetrical pusher blocks 35 to move outward. This presses down and flattens the raised corner of the sheet, preventing warping. The pusher block 35 is then embedded into the position of the inclined notch 33 to form a fit. The bending head 32 and the pusher block 35 together bend the sheet. Furthermore, by moving the bending pressure head 32 downwards, the bending pressure head 32 will drive the bending extrusion part 37 to move downwards as well. The inclined surface at the bottom of the bending extrusion part 37 contacts the wedge-shaped surface on the side of the secondary pressing part 45, so that the secondary pressing part 45 is subjected to the extrusion force in the direction of the downward die 43. This allows the secondary pressing part 45 to slide into the downward die 43, and the reset elastic sheet 47 undergoes elastic deformation after being extruded. The pressing point on the surface of the secondary pressing part 45 applies pressure to the bending side of the sheet, and applies pressure to the bending side of the sheet a second time, which can reduce the springback of the formed vehicle inverter sheet metal frame and avoid excessive springback.

[0034] After the sheet metal frame of the vehicle inverter is bent, the retraction of the telescopic end of the lifting device 31 can apply an upward pulling force to the bending head 32, causing the bending head 32 to move upward. The bending extrusion part 37 will also move upward along with the bending head 32. The bending extrusion part 37 separates from the secondary pressing part 45, thereby releasing the extrusion pressure of the bending extrusion part 37 on the secondary pressing part 45. Under the elastic force of the reset elastic plate 47 itself, the secondary pressing part 45 moves outward to reset, and the bent sheet metal frame of the vehicle inverter is removed. After the bending head 32 moves upward and resets, it separates from the lower mold 43. The operator then starts the linear actuator 412, using its output to move the rotary device 413 to the middle of the machine body 1. The linear actuator 412 is then paused, and the rotary device 413 is restarted. The output of the rotary device 413 rotates counter-clockwise, causing the connecting turntable 414 to rotate counter-clockwise. This causes the right-angle base 42 and the lower mold 43 to rotate 180 degrees counter-clockwise. The rotary device 413 is then paused, and the right-angle base 42 changes from an L-shape to a vertical right angle, while the lower mold 43 rotates downwards. The linear actuator 412 is then restarted. 12. The linear actuator 412 drives the rotary actuator 413 to move directly below the bending extrusion piece 37. When the top of the right-angle base 42 is flat and directly facing the strip pressing tooth 36, the right-angle base 42 is directly below the strip pressing tooth 36. The linear actuator 412 is paused again. When it is necessary to press the edge of the bent sheet metal frame, the bent sheet metal frame can be moved to the top of the right-angle base 42, and the lifting device 31 is turned on again. The extension of the telescopic end of the lifting device 31 causes the bending pressure head 32 to drive the strip pressing tooth 36 to move downward. The bent sheet metal frame that needs to be pressed is between the right-angle base 42 and the strip pressing tooth 36. The pressing pressure of the strip pressing tooth 36 can then be used to press the sheet metal frame for further processing.

[0035] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. The scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A bending device for processing sheet metal frames of vehicle inverters, characterized in that, include: The machine body (1) and the feeding mechanism (2) installed on the surface of the machine body (1); The pressing mechanism (3) includes a lifting device (31) and a bending head (32). The lifting device (31) is fixedly installed on the top of the surface of the machine body (1). The top of the bending head (32) is fixedly installed with the telescopic end of the lifting device (31). Both ends of the bottom of the bending head (32) are provided with inclined notches (33). A pusher block (35) is slidably installed at the position of the inclined notch (33) on the surface of the bending head (32). A bending spring (34) is fixedly connected between the end of the pusher block (35) and the outer end of the bending head (32). The bottom end of the bending spring (34) is connected to the pusher block (35). A strip-shaped pressing tooth (36) is fixedly connected in the middle of the surface of the bending head (32). A bending extrusion part (37) is fixedly connected on the surface of the bending head (32) and on the side away from the strip-shaped pressing tooth (36). The lower mold mechanism (4) includes an adjuster (41), a right-angle base (42) and a lower mold (43). The adjuster (41) is installed at the bottom of the inner cavity of the machine body (1). The right-angle base (42) and the lower mold (43) are both installed at the rotating end of the adjuster (41). A cylindrical roller (44) is rolled at the bend at the top of the lower mold (43). A secondary pressing component (45) is slidably installed on the side of the surface of the lower mold (43). A right-angle limiting component (46) is fixedly connected to the side of the top of the lower mold (43). A reset elastic sheet (47) is fixedly connected between the inner side of the secondary pressing component (45) and the surface of the lower mold (43).

2. The bending equipment for processing sheet metal frames of vehicle inverters according to claim 1, characterized in that: There are two lifting devices (31), and both lifting devices (31) are installed vertically. The bending head (32) is installed directly below the lifting device (31) and is installed horizontally.

3. The bending equipment for processing sheet metal frames of vehicle inverters according to claim 1, characterized in that: There are two pusher blocks (35), and the two pusher blocks (35) are symmetrically installed along the bending head (32).

4. The bending equipment for processing sheet metal frames of vehicle inverters according to claim 1, characterized in that: The right-angle base (42) and the lower mold (43) are both installed horizontally. The lower mold (43) is installed directly below the bending head (32), and the right-angle base (42) is installed directly below the lower mold (43).

5. A bending device for processing sheet metal frames of vehicle inverters according to claim 1, characterized in that: There are two cylindrical rollers (44), and the two cylindrical rollers (44) are symmetrically installed along the bending opening at the top of the lower mold (43), and the reset elastic sheet (47) is installed at an angle.

6. A bending device for processing sheet metal frames of vehicle inverters according to claim 1, characterized in that: The regulator (41) includes a support platform (411), the bottom of which is fixedly installed to the bottom of the inner cavity of the machine body (1). A linear driver (412) is fixedly installed on the side of the top of the support platform (411). A rotator (413) is fixedly installed at the output end of the linear driver (412). A connecting turntable (414) is fixedly installed at the output end of the rotator (413). The lower mold (43) is fixedly installed on the top of the surface of the connecting turntable (414). The right-angle base (42) is fixedly installed on the bottom of the surface of the connecting turntable (414).

7. A bending device for processing sheet metal frames of a vehicle inverter according to claim 6, characterized in that: There are two linear actuators (412), and the two linear actuators (412) are symmetrically installed along the central axis in the middle of the support platform (411), and the rotator (413) is installed vertically.

8. A bending device for processing sheet metal frames of vehicle inverters according to claim 1, characterized in that: The feeding mechanism (2) includes a feeding platform (21) and a strip groove (22). The feeding platform (21) is fixedly installed on the surface of the machine body (1) and close to the lower mold (43). The strip groove (22) is opened on the side of the top of the feeding platform (21). An electric telescopic rod (23) is fixedly installed on the side of the bottom of the feeding platform (21). A C-shaped connecting slider (24) is fixedly connected to the edge of the surface of the feeding platform (21). A U-shaped pusher (25) is fixedly installed at the top of the C-shaped connecting slider (24). A cylindrical notch (26) is opened at the corner of the inner side of the U-shaped pusher (25).

9. A bending device for processing sheet metal frames of a vehicle inverter according to claim 8, characterized in that: The bottom of the surface of the C-shaped connecting slider (24) is fixedly installed with the telescopic end of the electric telescopic rod (23). There are two C-shaped connecting sliders (24), and the two C-shaped connecting sliders (24) are symmetrically installed along the feeding platform (21).

10. A bending device for processing sheet metal frames of a vehicle inverter according to claim 8, characterized in that: The U-shaped pusher (25) is installed directly above the feeding platform (21), and the strip groove (22) is evenly distributed on the side of the top of the feeding platform (21). The opening of the U-shaped pusher (25) faces the strip groove (22).

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