Intelligent manufacturing high-precision sheet metal integrated bending forming device

Abstract

This invention relates to an integrated bending and forming device for high-precision sheet metal parts in intelligent manufacturing, belonging to the field of sheet metal bending and forming technology. It includes a forming machine body comprising a base, a support frame, an electric telescopic cylinder, a moving plate, and a fixed plate. A bending seat is fixedly connected to the top of the base, and a bending block structure is provided on the surface of the bending seat. The surface of the bending block structure is provided with a multiplier structure for pressure holding and springback correction. This integrated bending and forming device for high-precision sheet metal parts in intelligent manufacturing possesses advantages such as spring multiplication pressure increase, inertia compensation springback correction, integrated air flotation and anti-sticking blowing, automatic anti-blocking and flow stabilization, and structural rigidity adaptation. It achieves uniform bending and anti-sticking protection in all areas of the sheet metal part, significantly improving the processing accuracy of complex workpieces, meeting the stringent requirements of intelligent manufacturing for high-precision processing, and enhancing the device's continuous operation capability, ease of maintenance, and adaptability to complex workpieces.

Description

Technical Field

[0001] This invention relates to the field of sheet metal bending and forming technology, specifically to an intelligent manufacturing high-precision integrated sheet metal bending and forming device. Background Technology

[0002] In the field of intelligent manufacturing, integrated bending and forming devices for high-precision sheet metal parts are core equipment in the sheet metal processing industry. Their processing accuracy, stability, and adaptability directly determine the product quality and production efficiency of sheet metal parts. Existing integrated bending and forming devices mostly use electric telescopic cylinders as the power source, driving the bending block to descend along a preset trajectory, cooperating with the bending seat to complete the bending operation of the sheet metal part. To meet high-precision requirements, some devices are also equipped with servo control modules to adjust the travel and speed of the bending block. With the widespread application of high-strength steel, aluminum alloys, and other high-performance materials in sheet metal parts, and the increasing demand for processing thick plates and irregularly shaped sheet metal parts, higher requirements are placed on the bending device's force-multiplying pressure capacity, anti-sticking performance, inertial control accuracy, and impurity removal capabilities.

[0003] Currently common integrated bending forming machines rely solely on the start-stop control of electric telescopic cylinders for the stroke of the bending block, lacking an effective inertia compensation linkage mechanism. During the downward movement, the bending block's own inertia can easily cause over-pressure bending, resulting in angular deviations or surface damage to the sheet metal parts. During the upward movement, inertia can easily cause the bending block to wobble, leading to a gradual accumulation of errors during batch processing. Furthermore, there is no corresponding linkage pressure holding and springback correction structure after bending, making it impossible to achieve precise pressure holding through inertia or mechanical linkage. Uneven force distribution during bending is a prominent issue, and material springback errors are difficult to offset, further amplifying accuracy deviations.

[0004] Therefore, it is urgent to improve the aforementioned equipment in order to solve the problems mentioned above. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an integrated bending and forming device for high-precision sheet metal parts in intelligent manufacturing. It features advantages such as spring multiplication and pressurization, inertia compensation and springback correction, integrated air flotation and anti-sticking blowing, automatic anti-blocking and flow stabilization, and structural rigidity adaptation. It achieves uniform bending and anti-sticking protection for all areas of the sheet metal parts, significantly improves the processing accuracy of complex workpieces, meets the stringent requirements of intelligent manufacturing for high-precision processing, and enhances the device's continuous operation capability, ease of maintenance, and adaptability to complex workpieces.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an intelligent manufacturing high-precision sheet metal integrated bending and forming device, comprising a forming machine body, the forming machine body comprising a base, a stand, an electric telescopic cylinder, a moving plate and a fixed plate, a bending seat fixedly connected to the top of the base, a bending block structure provided on the surface of the bending seat, a multiplier structure for pressure holding and springback correction provided on the surface of the bending block structure, an air flotation structure extending into the outside of the bending block structure for anti-sticking guidance provided on the outside of the air flotation structure, and an anti-blocking structure linked with the multiplier structure provided on the outside of the air flotation structure;

[0007] The multiplication structure includes a sleeve fixedly connected inside the movable plate and a top block fixedly connected to the top of the fixed plate. A conical disk is abutted on the surface of the top block. A top rod slidably connected inside the sleeve is fixedly connected to the top of the conical disk. An abutting ball is fixedly connected to the top of the top rod. A return spring is fixedly connected to the top of the conical disk. A docking block is rolledly connected to the surface of the abutting ball.

[0008] The air flotation structure includes a connecting plate fixedly connected to the outside of a fixed plate and a connecting rod fixedly connected to the outside of a movable plate. A piston cylinder is fixedly connected to the outside of the connecting plate. A piston rod extending to the outside of the piston cylinder is slidably connected inside the piston cylinder. A connecting block is fixedly connected to the end of the piston rod away from the piston cylinder. A wave seat is fixedly connected to the bottom side of the connecting rod. A pin extending into the wave seat is rotatably connected to one side of the connecting block.

[0009] Furthermore, a conical moving groove adapted to the conical disk is provided on the bottom side inside the sleeve, a moving block is fixedly connected to the top of the docking block, the bottom end of the docking block is conical, a docking hole adapted to the abutting ball is provided through the docking block and the moving block, the docking hole is located at the axis of the docking block and the moving block, and the abutting ball is located at the eccentric part of the bottom end of the docking block.

[0010] Furthermore, the top of the movable block is fixedly connected to a limiting cover that matches the docking hole, the outer surface of the top of the sleeve is threadedly connected to a threaded sleeve, the inner top wall of the threaded sleeve and the movable block are fixedly connected to a retaining spring, the movable block is slidably connected to the inside of the sleeve, and the top side inside the sleeve is provided with a transmission groove that matches the docking block.

[0011] Furthermore, the bending block structure includes a bending block body bolted to the bottom of the fixing plate. The bending block body has a through groove inside, and two sealing blocks are fixedly connected inside the through groove. A reinforcing rib is fixedly connected between the two sealing blocks. An air nozzle is provided on the side wall of the bending block body, and an air supply channel adapted to the air nozzle is provided inside the bending block body.

[0012] Furthermore, a buffer spring is fixedly connected between the piston cylinder and the connecting block. The buffer spring is connected to the outer surface of the piston rod. A wave groove adapted to the pin is opened inside the wave seat. The pin and the wave groove are slidably connected. The piston rod is reciprocally slidably connected to the inside of the piston cylinder through the wave groove.

[0013] Furthermore, the air flotation structure also includes a tension spring and a floating plate. The floating plate is slidably connected to the inside of the air nozzle and extends to its outside. One end of the tension spring is fixedly connected to the inner wall of the air nozzle, and the other end of the tension spring is fixedly connected to the floating plate. There are multiple sets of air nozzles, tension springs, and floating plates.

[0014] Furthermore, check valves are fixedly connected to both the upper and lower sides of the piston cylinder, an air intake pipe is fixedly connected to the inside of the top check valve, and an air supply pipe is fixedly connected between the bottom check valve and the air supply channel.

[0015] Furthermore, the anti-blocking structure includes a mounting bracket fixedly connected to the outside of the connecting plate and a fixing block fixedly connected to the outside of the connecting block. An elastic telescopic rod is slidably connected inside the mounting bracket, and a striking plate is fixedly connected to one end of the elastic telescopic rod. The striking plate is located on one side outside the piston cylinder.

[0016] Furthermore, the other end of the elastic telescopic rod is fixedly connected to an inclined block, and an inclined linkage block adapted to the inclined block is fixedly connected to the outside of the fixed block. The elastic telescopic rod consists of a telescopic rod and a limiting plate. The limiting plate is fixedly connected to the outside of the telescopic rod, and the telescopic rod is reciprocally slidably connected to the inside of the mounting frame through the inclined block.

[0017] Furthermore, the upright frame is fixedly connected to the top of the base, a horizontal plate is fixedly connected to the top of the upright frame, the electric telescopic cylinder is fixedly installed on the top of the horizontal plate, the movable plate is fixedly connected to the output end of the electric telescopic cylinder, and a guide rod that penetrates the horizontal plate and extends to its upper surface is fixedly connected to the top of the movable plate.

[0018] Compared with the prior art, the present invention provides an integrated bending and forming device for intelligent manufacturing of high-precision sheet metal parts, which has the following beneficial effects:

[0019] 1. In this invention, when the moving plate is driven downward by the electric telescopic cylinder, the docking block moves downward synchronously. The conical surface at the bottom of the docking block presses against the abutting ball, causing the push rod to push the conical disc to expand along the conical moving groove inside the sleeve. Combined with the elastic force of the return spring and the abutting spring, a spring multiplication force effect is formed, which not only amplifies the bending pressure to adapt to the processing of thick plates, but also offsets the downward inertia of the moving plate through elastic buffering, avoiding overpressure damage to the workpiece. After bending is completed, the abutting spring drives the moving block to reset, and the conical disc and the push rod return to their initial positions under the action of the return spring. At the same time, the eccentric fit between the abutting ball and the docking hole can provide continuous micro-pressure holding, and the springback correction is achieved by means of mechanical linkage.

[0020] 2. In this invention, the downward movement of the moving plate drives the wave seat to move. The movement of the wave seat drives the pin shaft to pull the piston rod to slide back and forth in the piston cylinder. The airflow is ejected from the air nozzle through the air delivery channel, forming a thin air film on the contact surface between the bending block body and the sheet metal part. This significantly reduces frictional resistance and prevents high-strength steel and aluminum alloy from sticking to the cutting edge. At the same time, the floating plate in the air nozzle is always in contact with the surface of the sheet metal part under the action of the tension spring. This ensures the air film coverage is sealed and can also simultaneously blow away external impurities on the workpiece during the bending process, avoiding surface indentations caused by impurities. This achieves integrated linkage of contact, blowing and anti-sticking functions.

[0021] 3. In this invention, when the piston rod reciprocates, it drives the connecting block and the fixed block to move synchronously. The inclined linkage block on the fixed block periodically squeezes the inclined block, driving the elastic telescopic rod to reciprocate along the mounting frame. This, in turn, drives the striking plate to regularly strike the outside of the piston cylinder. The vibration can shake off residual impurities inside the piston cylinder and at the inlet of the gas pipe. At the same time, in conjunction with the shielding effect of the floating plate, it prevents external impurities from entering the gas nozzle, ensuring the continuous and stable operation of the air flotation structure and improving the continuous operation capability and maintenance convenience of the device.

[0022] 4. This invention enhances structural rigidity by incorporating reinforcing ribs and sealing blocks, enabling it to withstand the amplified pressure transmitted by the multiplier structure and preventing deformation of the bending block body due to concentrated stress. Simultaneously, the air supply channel precisely connects to the air supply pipe of the air-floating structure. The multiple layouts of the air nozzles and the elastic setting of the floating plate can adaptively adjust the contact state according to the surface morphology of the sheet metal part. Combined with the precise pressurization of the multiplier structure, it achieves uniform bending and anti-stick protection for various areas of the sheet metal part, significantly improving the processing accuracy of complex workpieces. Attached Figure Description

[0023] Figure 1 This is a perspective view of the overall structure of the present invention;

[0024] Figure 2 This is a cross-sectional view of the structure of the present invention;

[0025] Figure 3 This is a cross-sectional view of the multiplication structure of the present invention;

[0026] Figure 4 This is a cross-sectional view of the structure of the present invention;

[0027] Figure 5 This is a cross-sectional view of the bending block structure of the present invention;

[0028] Figure 6 This is a cross-sectional view of the air flotation structure of the present invention;

[0029] Figure 7 This is a schematic diagram of the air flotation structure of the present invention;

[0030] Figure 8 This is a schematic diagram of the air flotation structure and anti-clogging structure of the present invention.

[0031] In the diagram: 1. Forming body; 11. Base; 12. Upright frame; 13. Horizontal plate; 14. Electric telescopic cylinder; 15. Moving plate; 16. Fixed plate; 17. Guide rod; 2. Bending seat; 3. Bending block structure; 31. Bending block body; 32. Sealing block; 33. Reinforcing rib; 34. Air nozzle; 35. Air supply channel; 4. Multiplying structure; 41. Threaded sleeve; 42. Sleeve; 43. Top block; 44. Conical disc; 45. Top rod; 46. Abutting ball; 47. Conical moving groove; 48. Return spring; 49. Connecting block; 410. Moving block 411. Transmission groove; 412. Docking hole; 413. Limit cover; 414. Abutment spring; 5. Air flotation structure; 51. Connecting plate; 52. Piston cylinder; 53. Piston rod; 54. Connecting block; 55. Buffer spring; 56. Connecting rod; 57. Wave seat; 58. Pin shaft; 59. Check valve; 510. Air supply pipe; 511. Air intake pipe; 512. Tension spring; 513. Floating plate; 6. Anti-blocking structure; 61. Mounting bracket; 62. Elastic telescopic rod; 63. Striking plate; 64. Inclined block; 65. Fixing block; 66. Inclined linkage block. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figures 1 to 8This embodiment of a smart manufacturing high-precision sheet metal integrated bending and forming device includes a forming machine body 1. The forming machine body 1 includes a base 11, a stand 12, an electric telescopic cylinder 14, a moving plate 15, and a fixed plate 16. A bending seat 2 is fixedly connected to the top of the base 11. A bending block structure 3 is provided on the surface of the bending seat 2. A multiplier structure 4 for pressure holding and springback correction is provided on the surface of the bending block structure 3. An air flotation structure 5 for anti-sticking guidance is provided on the outside of the bending block structure 3 and an anti-blocking structure 6 that is linked with the multiplier structure 4 is provided on the outside of the air flotation structure 5.

[0034] The multiplier structure 4 includes a sleeve 42 fixedly connected inside the movable plate 15 and a top block 43 fixedly connected to the top of the fixed plate 16. A conical disk 44 abuts against the surface of the top block 43. A top rod 45, slidably connected inside the sleeve 42, is fixedly connected to the top of the conical disk 44. An abutting ball 46 is fixedly connected to the top of the top rod 45. A return spring 48 is fixedly connected to the top of the conical disk 44. A mating block 49 is rolled onto the surface of the abutting ball 46. By utilizing the cooperation between the conical disk 44 and the abutting ball 46, axial force can be converted into radial multiplier force. Combined with the return spring 48, elastic pressure is achieved, effectively counteracting downward inertia and preventing overpressure bending.

[0035] Specifically, a conical moving groove 47 adapted to the conical disk 44 is provided on the bottom side inside the sleeve 42. A moving block 410 is fixedly connected to the top of the docking block 49. The bottom end of the docking block 49 is conical. A docking hole 412 adapted to the abutting ball 46 is provided between the docking block 49 and the moving block 410. The docking hole 412 is located at the axis of the docking block 49 and the moving block 410. The abutting ball 46 is located at the eccentric position at the bottom end of the docking block 49. The conical moving groove 47 limits the movement trajectory of the conical disk 44. The eccentrically positioned abutting ball 46 can provide continuous micro-pressure after pressurization, laying the foundation for subsequent springback correction and improving the stability of the structural movement.

[0036] It should be noted that the top of the movable block 410 is fixedly connected to a limiting cover 413 that matches the docking hole 412. The outer surface of the top of the sleeve 42 is threadedly connected to a threaded sleeve 41. An abutment spring 414 is fixedly connected between the inner top wall of the threaded sleeve 41 and the movable block 410. The movable block 410 is slidably connected to the inside of the sleeve 42. A transmission groove 411 that matches the docking block 49 is opened on the top side inside the sleeve 42. The preload of the abutment spring 414 can be adjusted by rotating the threaded sleeve 41 to adapt to the pressure requirements of sheet metal parts of different thicknesses. The limiting cover 413 and the transmission groove 411 together limit the movement trajectory, prevent the parts from shifting, and ensure the stability of the force multiplication effect.

[0037] In this embodiment, the bending block structure 3 includes a bending block body 31 bolted to the bottom of the fixing plate 16. The bending block body 31 has an internal through groove, and two sealing blocks 32 are fixedly connected inside the through groove. A reinforcing rib 33 is fixedly connected between the two sealing blocks 32. An air nozzle 34 is provided on the side wall of the bending block body 31, and an air supply channel 35 adapted to the air nozzle 34 is provided inside the bending block body 31. By setting the reinforcing rib 33, the structural rigidity is improved to withstand the multiplier force. The air supply channel 35 and the air nozzle 34 provide a pathway for air flotation and anti-sticking, achieving a balance between function and structural strength.

[0038] In this embodiment, the air flotation structure 5 includes a connecting plate 51 fixedly connected to the outside of the fixed plate 16 and a connecting rod 56 fixedly connected to the outside of the moving plate 15. A piston cylinder 52 is fixedly connected to the outside of the connecting plate 51. A piston rod 53 extending to the outside of the piston cylinder 52 is slidably connected inside the piston cylinder 52. A connecting block 54 is fixedly connected to the end of the piston rod 53 away from the piston cylinder 52. A wave seat 57 is fixedly connected to the bottom side of the connecting rod 56. A pin 58 extending into the wave seat 57 is rotatably connected to one side of the connecting block 54. When the moving plate 15 moves and the bending block structure 3 bends, it drives the wave seat 57 to move downward. The reciprocating motion of the piston rod 53 is achieved through the engagement of the pin 58 with the wave groove. No additional air pump power is required, achieving powerless air pumping.

[0039] A buffer spring 55 is fixedly connected between the piston cylinder 52 and the connecting block 54. The buffer spring 55 is wrapped around the outer surface of the piston rod 53. The inside of the wave seat 57 has a wave groove that matches the pin 58. The pin 58 and the wave groove are slidably connected. The piston rod 53 is reciprocally slidably connected to the inside of the piston cylinder 52 through the wave groove. By setting the buffer spring 55, the impact of the piston rod 53 movement is reduced, and component wear is avoided. The undulation of the wave groove can precisely control the stroke of the piston rod 53, ensuring stable air volume and improving the reliability of the air flotation effect.

[0040] Specifically, the air flotation structure 5 also includes a tension spring 512 and a floating plate 513. The floating plate 513 is slidably connected to the inside of the air nozzle 34 and extends to its outside. One end of the tension spring 512 is fixedly connected to the inner wall of the air nozzle 34, and the other end of the tension spring 512 is fixedly connected to the floating plate 513. There are multiple sets of air nozzle 34, tension spring 512, and floating plate 513. Under the action of the tension spring 512, the floating plate 513 always abuts against the sheet metal part, which not only seals the air film to improve the anti-sticking effect, but also blows away impurities. The multiple sets of layout ensure uniform air film coverage and are suitable for sheet metal part processing.

[0041] It should be noted that check valves 59 are fixedly connected to both the upper and lower sides of the piston cylinder 52. An intake pipe 511 is fixedly connected inside the top check valve 59, and an air supply pipe 510 is fixedly connected between the bottom check valve 59 and the air supply channel 35. By setting two sets of check valves 59, unidirectional airflow is achieved, preventing gas backflow and ensuring continuous airflow from the nozzle 34. The intake pipe 511 and the air supply pipe 510 respectively complete the intake and supply of air, constructing a complete air circulation path and ensuring continuous and stable air flotation function.

[0042] In this embodiment, the anti-clogging structure 6 includes a mounting bracket 61 fixedly connected to the outside of the connecting plate 51 and a fixing block 65 fixedly connected to the outside of the connecting block 54. An elastic telescopic rod 62 is slidably connected inside the mounting bracket 61, and a striking plate 63 is fixedly connected to one end of the elastic telescopic rod 62. The striking plate 63 is located on one side outside the piston cylinder 52. By relying on the movement of the connecting block 54 to drive the anti-clogging structure 6, the striking plate 63 can move with the air flotation structure 5 and shake off impurities through vibration, thus preventing airway blockage from the source and reducing equipment maintenance costs.

[0043] The other end of the elastic telescopic rod 62 is fixedly connected to a wedge block 64. A diagonal linkage block 66, compatible with the wedge block 64, is fixedly connected to the outside of the fixed block 65. The elastic telescopic rod 62 consists of a telescopic rod and a limiting plate. The limiting plate is fixedly connected to the outside of the telescopic rod, and the telescopic rod is reciprocally slidably connected to the inside of the mounting bracket 61 via the wedge block 64. Through the cooperation of the wedge block 64 and the diagonal linkage block 66, linear motion is converted into the reciprocating motion of the elastic telescopic rod 62, ensuring uniform striking force and preventing excessive striking that could damage components.

[0044] In this embodiment, the upright frame 12 is fixedly connected to the top of the base 11, and a horizontal plate 13 is fixedly connected to the top of the upright frame 12. An electric telescopic cylinder 14 is fixedly installed on the top of the horizontal plate 13, and a movable plate 15 is fixedly connected to the output end of the electric telescopic cylinder 14. A guide rod 17 that penetrates the horizontal plate 13 and extends to its upper surface is fixedly connected to the top of the movable plate 15.

[0045] The working principle of the above embodiments is as follows:

[0046] First, place the sheet metal part to be processed stably on the bending seat 2 at the top of the base 11 to complete the workpiece positioning; after starting the electric telescopic cylinder 14, its output end drives the moving plate 15 to move vertically downward along the guide rod 17. The moving plate 15 simultaneously drives the docking block 49 of the multiplication structure 4, the connecting rod 56 of the air flotation structure 5 and the wave seat 57 to move down together, driving the bending block structure 3 to approach the sheet metal part, and the bending operation officially starts.

[0047] In the initial stage of the downward movement of the moving plate 15, the multiplier structure 4 first forms a rolling contact fit; the docking block 49 moves downward with the moving plate 15, and its bottom conical surface contacts the abutting ball 46. Since the abutting ball 46 is eccentrically set at the bottom of the docking block 49 and fixed to the top of the push rod 45, the two form a rolling contact, effectively reducing relative friction loss; at this time, the downward force of the docking block 49 generates a lateral squeezing force on the abutting ball 46, pushing the push rod 45 to initially slide along the inside of the sleeve 42, causing the conical disk 44 to slightly displace in the conical moving groove 47, while compressing the return spring 48 to store power for subsequent pressurization; the limiting cover 413 and the transmission groove 411 synchronously limit the movement trajectory of the docking block 49 and the moving block 410 to prevent component displacement and ensure linkage stability;

[0048] As the electric telescopic cylinder 14 continuously outputs pressure, the abutting ball 46 rolls along the conical surface at the bottom of the docking block 49 to the entrance of the docking hole 412, and then extends into the interior of the docking hole 412, achieving secondary pressurization. The docking hole 412 is located at the axis of the docking block 49 and the moving block 410, and is precisely matched with the abutting ball 46. After the abutting ball 46 extends in, the axial downward force of the docking block 49 is transmitted to the abutting ball 46 through the inner wall of the docking hole 412. Combined with the previous lateral extrusion force, a compound force is formed, which pushes the push rod 45 and the conical disk 44 to move further down and expand along the conical moving groove 47, amplifying the power to form a force multiplier effect. At the same time, the moving block 410 compresses the abutting spring 414. The preload of the abutting spring 414 can be adjusted by rotating the threaded sleeve 41 to adapt to the pressurization requirements of sheet metal parts of different thicknesses. This stage not only strengthens the bending force, but also offsets the downward inertia through the elastic structure, avoiding overpressure damage to the workpiece.

[0049] While the multiplier structure 4 pressurizes and bends, the air flotation structure 5 and the anti-blocking structure 6 work in sync. The wave seat 57 moves down with the connecting rod 56, and its internal wave groove drives the pin 58 to slide, causing the connecting block 54 and piston rod 53 to reciprocate within the piston cylinder 52. The buffer spring 55 relieves the impact of the movement. The piston cylinder 52 draws in air through the top check valve 59 and the suction pipe 511, and then sends the gas into the air supply channel 35 of the bending block body 31 through the bottom check valve 59 and the air supply pipe 510, and sprays it out from the air nozzle 34. The floating plate 513 inside the air nozzle 34 abuts against the sheet metal part under the action of the tension spring 512, forming a uniform seal. The air film prevents sticking and blows away impurities. The reinforcing rib 33 ensures the rigidity of the bending block body 31 to withstand the force. Simultaneously, the connecting block 54 drives the fixed block 65 to move back and forth, the inclined linkage block 66 reciprocates to squeeze the inclined block 64, and drives the elastic telescopic rod 62 to drive the striking plate 63 to strike the piston cylinder 52, shaking off impurities to prevent blockage. After bending, the electric telescopic cylinder 14 drives the moving plate 15 to move upward, and the abutting ball 46 exits from the docking hole 412. All components are reset under the action of the return spring 48 and the abutting spring 414. The eccentric setting of the abutting ball 46 provides continuous micro-pressure to correct the workpiece springback error and complete one cycle.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated bending and forming device for high-precision sheet metal parts in intelligent manufacturing, comprising a forming machine body (1), characterized in that: The forming machine body (1) includes a base (11), a stand (12), an electric telescopic cylinder (14), a moving plate (15), and a fixed plate (16). A bending seat (2) is fixedly connected to the top of the base (11). A bending block structure (3) is provided on the surface of the bending seat (2). A multiplier structure (4) for pressure holding and springback correction is provided on the surface of the bending block structure (3). An air flotation structure (5) for anti-sticking guidance is provided on the outside of the bending block structure (3) and an anti-blocking structure (6) that is linked with the multiplier structure (4) is provided on the outside of the air flotation structure (5). The multiplication structure (4) includes a sleeve (42) fixedly connected inside the movable plate (15) and a top block (43) fixedly connected to the top of the fixed plate (16). The surface of the top block (43) abuts against a conical disk (44). The top of the conical disk (44) is fixedly connected to a top rod (45) slidably connected inside the sleeve (42). The top end of the top rod (45) is fixedly connected to an abutting ball (46). The top of the conical disk (44) is fixedly connected to a return spring (48). The surface of the abutting ball (46) is rolledly connected to a connecting block (49). The air flotation structure (5) includes a connecting plate (51) fixedly connected to the outside of the fixed plate (16) and a connecting rod (56) fixedly connected to the outside of the moving plate (15). A piston cylinder (52) is fixedly connected to the outside of the connecting plate (51). A piston rod (53) extending to the outside of the piston cylinder (52) is slidably connected inside the piston cylinder (52). A connecting block (54) is fixedly connected to one end of the piston rod (53) away from the piston cylinder (52). A wave seat (57) is fixedly connected to the bottom side of the connecting rod (56). A pin (58) extending into the wave seat (57) is rotatably connected to one side of the connecting block (54).

2. The intelligent manufacturing high-precision sheet metal integrated bending and forming device according to claim 1, characterized in that: The sleeve (42) has a conical moving groove (47) adapted to the conical disk (44) on its bottom side. The top of the docking block (49) is fixedly connected to a moving block (410). The bottom of the docking block (49) is conical. A docking hole (412) adapted to the abutting ball (46) is opened between the docking block (49) and the moving block (410). The docking hole (412) is located at the axis of the docking block (49) and the moving block (410). The abutting ball (46) is located at the eccentric part of the bottom of the docking block (49).

3. The intelligent manufacturing high-precision sheet metal integrated bending and forming device according to claim 2, characterized in that: The top of the movable block (410) is fixedly connected to a limiting cover (413) that is compatible with the docking hole (412). The outer surface of the top of the sleeve (42) is threadedly connected to a threaded sleeve (41). A retaining spring (414) is fixedly connected between the inner top wall of the threaded sleeve (41) and the movable block (410). The movable block (410) is slidably connected to the inside of the sleeve (42). The top side inside the sleeve (42) is provided with a transmission groove (411) that is compatible with the docking block (49).

4. The intelligent manufacturing high-precision sheet metal integrated bending and forming device according to claim 1, characterized in that: The bending block structure (3) includes a bending block body (31) bolted to the bottom of the fixing plate (16). The bending block body (31) has a through groove inside. Two sealing blocks (32) are fixedly connected inside the through groove. A reinforcing rib (33) is fixedly connected between the two sealing blocks (32). An air nozzle (34) is provided on the side wall of the bending block body (31). An air supply channel (35) adapted to the air nozzle (34) is provided inside the bending block body (31).

5. The intelligent manufacturing high-precision sheet metal integrated bending and forming device according to claim 1, characterized in that: A buffer spring (55) is fixedly connected between the piston cylinder (52) and the connecting block (54). The buffer spring (55) is connected around the outer surface of the piston rod (53). The inside of the wave seat (57) is provided with a wave groove that matches the pin (58). The pin (58) and the wave groove are slidably connected. The piston rod (53) is slidably connected to the inside of the piston cylinder (52) through the wave groove.

6. The intelligent manufacturing high-precision sheet metal integrated bending and forming device according to claim 4, characterized in that: The air flotation structure (5) also includes a tension spring (512) and a floating plate (513). The floating plate (513) is slidably connected to the inside of the air nozzle (34) and extends to its outside. One end of the tension spring (512) is fixedly connected to the inner wall of the air nozzle (34), and the other end of the tension spring (512) is fixedly connected to the floating plate (513). The number of air nozzles (34), tension springs (512) and floating plates (513) are all multiple sets.

7. The intelligent manufacturing high-precision sheet metal integrated bending and forming device according to claim 4, characterized in that: Check valves (59) are fixedly connected to both the upper and lower sides of the piston cylinder (52). The upper check valve (59) is fixedly connected to the inside of the upper check valve (59) and the lower check valve (59) is fixedly connected to the gas delivery channel (35) via a gas delivery pipe (510).

8. The intelligent manufacturing high-precision sheet metal integrated bending and forming device according to claim 1, characterized in that: The anti-blocking structure (6) includes a mounting bracket (61) fixedly connected to the outside of the connecting plate (51) and a fixing block (65) fixedly connected to the outside of the connecting block (54). An elastic telescopic rod (62) is slidably connected inside the mounting bracket (61). A striking plate (63) is fixedly connected to one end of the elastic telescopic rod (62). The striking plate (63) is located on one side outside the piston cylinder (52).

9. The intelligent manufacturing high-precision sheet metal integrated bending and forming device according to claim 8, characterized in that: The other end of the elastic telescopic rod (62) is fixedly connected to an inclined block (64), and the outside of the fixed block (65) is fixedly connected to an inclined linkage block (66) that is compatible with the inclined block (64). The elastic telescopic rod (62) is composed of a telescopic rod and a limiting plate. The limiting plate is fixedly connected to the outside of the telescopic rod, and the telescopic rod is reciprocally slidably connected to the inside of the mounting frame (61) through the inclined block (64).

10. The intelligent manufacturing high-precision sheet metal integrated bending and forming device according to claim 1, characterized in that: The upright frame (12) is fixedly connected to the top of the base (11). A horizontal plate (13) is fixedly connected to the top of the upright frame (12). The electric telescopic cylinder (14) is fixedly installed on the top of the horizontal plate (13). The moving plate (15) is fixedly connected to the output end of the electric telescopic cylinder (14). A guide rod (17) that penetrates the horizontal plate (13) and extends to its upper surface is fixedly connected to the top of the moving plate (15).

Images