Sheet metal part bending device and bending method

Abstract

The present invention belongs to the technical field of sheet metal parts bending, and provides a sheet metal parts bending device and a bending method, wherein a sheet metal parts bending device comprises a support seat, the support seat is fixedly connected with a positioning platform, the positioning platform is rotatably connected with a limit roller and a rotating plate, a telescopically adjustable No. 3 electric rod is rotatably connected between the rotating plate and the support seat, the rotating plate is fixedly connected with a limit assembly, both sides of the positioning platform are fixedly connected with slide rails, and a positioning assembly is slidably connected in the two slide rails. In the present invention, the cooperation of the limit assembly, the positioning assembly, the drive assembly, the bending mechanism and the No. 4 electric rod can accurately position the fixed part and the bending part of the sheet metal parts, avoid displacement of the sheet metal parts during the bending process, and improve the processing accuracy of the sheet metal bending.

Description

Technical Field

[0001] The invention belongs to the technical field of sheet metal part bending, and in particular relates to a sheet metal part bending device and a bending method. Background Art

[0002] Sheet metal is a comprehensive cold processing technology for thin metal plates. Its most notable feature is that the thickness of the same part is consistent. The products processed by sheet metal technology are called sheet metal parts.

[0003] Bending refers to the process in which a metal sheet first undergoes elastic deformation and then plastic deformation under the pressure of the upper or lower die of a bending machine. In the initial stage of plastic bending, the sheet is freely bent. As the upper or lower die applies pressure to the sheet, the sheet and the inner surface of the V-groove of the lower die gradually come close to each other. At the same time, the radius of curvature and the bending arm also gradually decrease. Continue to apply pressure until the stroke ends, so that the upper and lower dies are in full contact with the sheet at three points. At this time, a V-shaped bend is completed, which is commonly known as bending.

[0004] When the existing sheet metal part bending device is bent, the sheet metal part will extend during bending, resulting in relative displacement between the sheet metal part and the pressing mechanism. If the contact area between the pressing mechanism and the sheet metal part is too large, the surface of the sheet metal part will be more worn. At the same time, if the contact area between the sheet metal part and the pressing mechanism is small, the plate surface of the sheet metal part will be easily deformed during bending, resulting in local depressions and protrusions. Summary of the invention

[0005] The object of the present invention is to provide a sheet metal part bending device and a bending method, aiming to solve the technical problem in the prior art that sheet metal parts are prone to wear or deformation when being bent.

[0006] The present invention is implemented in this way. A sheet metal part bending device comprises a support seat, the support seat is fixedly connected with a positioning platform, the positioning platform is rotatably connected with a limiting roller and a rotating plate, a retractable and adjustable No. 3 electric rod is rotatably connected between the rotating plate and the support seat, the rotating plate is fixedly connected with a limiting component, the limiting component is used to elastically limit the sheet metal part during the bending process, both sides of the positioning platform are fixedly connected with slide rails, the two slide rails are slidably connected with a positioning component, a retractable No. 4 electric rod is fixedly connected between the positioning component and the slide rail, and the positioning component is used to fix the sheet metal part;

[0007] The rotating plate is slidably connected to a bending mechanism, and the rotating plate is fixedly connected to a fixed plate. A driving assembly is arranged between the fixed plate and the bending mechanism. The driving assembly is used to push the bending mechanism to rise and fall vertically. The bending mechanism can limit the sheet metal parts.

[0008] Further technical solution: the limit assembly includes a telescopic sleeve, a No. 1 spring, a limit seat and a fixed seat;

[0009] The fixed part of the telescopic sleeve is fixedly connected to the side end surface of the rotating plate, the telescopic part of the telescopic sleeve is fixedly connected to a fixed seat, the side end surface of the fixed part of the telescopic sleeve is slidably connected to a limiting seat, and a No. 1 spring is arranged between the limiting seat and the fixed seat.

[0010] Further technical solution: the positioning assembly includes a moving frame, a No. 1 electric rod and a pressure plate;

[0011] The two ends of the movable frame are respectively slidably connected to the two slide rails, a No. 4 electric rod is fixedly connected between each end of the movable frame and the slide rail, a No. 1 electric rod is fixedly arranged in the middle of the movable frame, a pressure plate is fixedly connected to the telescopic end of the No. 1 electric rod, and the pressure plate faces the end surface of the positioning platform.

[0012] Further technical solution: the bending mechanism includes a guide rail, a guide rod, a sliding seat, a pressure roller and a second spring;

[0013] Guide rails are provided on both sides of the rotating plate, and guide rods are fixedly connected to the guide rails. The guide rods are slidably connected to and penetrate the fixed plate. Several sliding seats are slidably connected in the guide rails, and pressure rollers are rotatably connected between the sliding seats on both sides of the rotating plate. A No. 2 spring is connected between two adjacent sliding seats.

[0014] Further technical solution: A second electric rod is connected between a sliding seat on the outermost side of the rotating plate and the side wall of the rotating plate.

[0015] Further technical solution: all sliding seats in one guide rail are provided with an inner cavity filled with lubricating oil, and the side walls on both sides opposite to each other of all sliding seats are slidably and sealedly connected with sliding plugs, the No. 2 springs are in contact with the sliding plugs on one side, and the telescopic part of the No. 2 electric rod is in contact with the sliding plug on one side of a sliding seat, the sliding seats are sealedly connected with cover plates, and the cover plates are provided with one-way air intake valves;

[0016] The pressing roller is connected with a plurality of liquid outlet holes, and the pressing rollers are all connected with the inner cavity of the sliding seat on one side, and a one-way liquid outlet valve for one-way conduction to the middle of the pressing roller is arranged at one end of each pressing roller.

[0017] Further technical solution: The driving assembly includes a No. 1 motor and a threaded rod, the No. 1 motor is fixedly connected to the fixed plate, the output shaft of the No. 1 motor is fixedly connected to the threaded rod, and the threaded rod is threadedly connected to the guide rail.

[0018] Further technical solution: a rubber plate is fixedly connected between the sliding seats on both sides of the rotating plate, and the rubber plate is in contact with a pressure roller on one side.

[0019] A sheet metal part bending method, applied to any of the sheet metal part bending devices described above, comprises the following steps:

[0020] S1: Place the sheet metal part on the end surface of the positioning table, and insert one end of the sheet metal part between the bending mechanism and the rotating plate to position the sheet metal part;

[0021] S2: Start the No. 4 electric rod to adjust the fixing position of the positioning component on the sheet metal part; then start the positioning component to fix the fixing part of the sheet metal part; start the driving component to drive the bending mechanism to move vertically downward, so that the bending mechanism fits the upper end surface of the bending part of the sheet metal part;

[0022] S3: Start the limit assembly, which is in elastic contact with the sheet metal part, so as to prevent the sheet metal part from deflecting downward under the action of pressure during bending. The limit assembly applies a reverse upward support force to the sheet metal part, thereby improving the processing accuracy of the sheet metal part.

[0023] S4: Start the No. 3 electric rod to retract, and the No. 3 electric rod drives the rotating plate to rotate downward. The rotating plate presses the sheet metal parts downward through the bending mechanism, thereby bending the sheet metal parts.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The cooperation of the limit assembly, positioning assembly, drive assembly, bending mechanism and No. 4 electric rod can accurately position the fixed part and bending part of the sheet metal parts to avoid displacement of the sheet metal parts during the bending process and improve the processing accuracy of the sheet metal bending;

[0026] 2. Multiple pressing rollers are used to limit the sheet metal parts in sections. On the one hand, when a single pressing roller squeezes the sheet metal parts, the rest of the sheet metal parts are prevented from tilting relative to the rotating plate, resulting in poor flatness of the bending part of the sheet metal parts. On the other hand, when the sheet metal parts are bent, the bending part of the sheet metal parts extends, causing the sheet metal parts to move relative to the pressing rollers. At this time, the pressing rollers can rotate under the friction of the sheet metal parts, thereby avoiding wear on the surface of the sheet metal parts.

[0027] 3. When the sheet metal parts are bent, start the No. 2 electric rod, which pushes the sliding seat connected to it to slide in the guide rail. All sliding seats move synchronously driven by all No. 2 springs, so that all pressure rollers roll toward one end of the sheet metal parts, thereby increasing the flatness of the surface of the bent part of the sheet metal parts;

[0028] 4. When all the pressure rollers roll toward one end of the sheet metal part, extrusion is generated between the raised part of the sheet metal part and the pressure roller, and the sliding plug shrinks toward the sliding seat where it is located. At this time, the air pressure in the sliding seat increases, the one-way liquid outlet valve is turned on, and the lubricating oil in the sliding seat enters the pressure roller. The lubricating oil in the pressure roller flows between the raised part of the sheet metal part and the pressure roller, thereby avoiding friction between the raised part of the sheet metal part and the pressure roller, which may cause damage to the surface of the sheet metal part. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0030] Figure 2 Schematic diagram of the connection between the positioning table and the rotating plate.

[0031] Figure 3 It is a schematic diagram of the structure of the limit component.

[0032] Figure 4 for Figure 3 Schematic diagram of the enlarged structure of area A in the middle.

[0033] Figure 5 A schematic diagram of the structure of the drive component.

[0034] Figure 6 It is a schematic diagram of the connection between the driving component and the bending mechanism.

[0035] Figure 7 for Figure 6 Schematic diagram of the enlarged structure of area B in the middle.

[0036] In the attached drawings: 1. Support seat; 2. Positioning table; 3. Limit roller; 4. Rotating plate; 5. Limit assembly; 51. Telescopic sleeve; 52. No. 1 spring; 53. Limit seat; 54. Fixed seat; 6. Positioning assembly; 61. Moving frame; 62. No. 1 electric rod; 63. Pressing plate; 7. Driving assembly; 71. No. 1 motor; 72. Threaded rod; 8. Bending mechanism; 81. Guide rail; 82. Guide rod; 83. Sliding seat; 84. Pressing roller; 85. No. 2 spring; 86. No. 2 electric rod; 9. Sliding plug; 10. No. 3 electric rod; 11. Sliding rail; 12. No. 4 electric rod; 13. Fixed plate; 14. Cover plate; 15. One-way air inlet valve; 16. One-way liquid outlet valve; 17. Liquid outlet hole; 18. Rubber sheet. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0038] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0039] like Figure 1-Figure 7 As shown, a sheet metal part bending device provided by the present invention comprises a support seat 1, the support seat 1 is fixedly connected with a positioning platform 2, the positioning platform 2 is rotatably connected with a limiting roller 3 and a rotating plate 4, a retractable and adjustable No. 3 electric rod 10 is rotatably connected between the rotating plate 4 and the support seat 1, the rotating plate 4 is fixedly connected with a limiting component 5, the limiting component 5 is used to elastically limit the sheet metal part during the bending process, both sides of the positioning platform 2 are fixedly connected with slide rails 11, the two slide rails 11 are slidably connected with a positioning component 6, a retractable No. 4 electric rod 12 is fixedly connected between the positioning component 6 and the slide rail 11, and the positioning component 6 is used to fix the sheet metal part;

[0040] The rotating plate 4 is slidably connected to a bending mechanism 8, and the rotating plate 4 is fixedly connected to a fixed plate 13. A driving component 7 is provided between the fixed plate 13 and the bending mechanism 8. The driving component 7 is used to push the bending mechanism 8 to rise and fall vertically. The bending mechanism 8 can limit the sheet metal parts.

[0041] In this embodiment, when in use, the sheet metal part is placed on the end surface of the positioning table 2, and one end of the sheet metal part is inserted between the bending mechanism 8 and the rotating plate 4 to position the sheet metal part;

[0042] Start the fourth electric rod 12 to adjust the fixing position of the positioning assembly 6 on the sheet metal part; then start the positioning assembly 6 to fix the fixing part of the sheet metal part; start the driving assembly 7 to drive the bending mechanism 8 to move vertically downward, so that the bending mechanism 8 fits the upper end surface of the bending part of the sheet metal part;

[0043] Start the limit assembly 5, which elastically contacts the sheet metal part, so as to prevent the sheet metal part from deflecting downward under the action of pressure during bending. The limit assembly 5 applies a reverse upward supporting force to the sheet metal part, thereby improving the processing accuracy of the sheet metal part;

[0044] Through the cooperation of the limit assembly 5, the positioning assembly 6, the driving assembly 7, the bending mechanism 8 and the fourth electric rod 12, the fixing part and the bending part of the sheet metal part are accurately positioned to avoid displacement of the sheet metal part during the bending process, thereby improving the processing accuracy of the sheet metal bending;

[0045] The third electric rod 10 is started to contract, and the third electric rod 10 drives the rotating plate 4 to rotate downward, and the rotating plate 4 presses the sheet metal parts downward through the bending mechanism 8, thereby bending the sheet metal parts.

[0046] like Figure 3As shown, a sheet metal parts bending device provided by the present invention, the limit assembly 5 includes a telescopic sleeve 51, a No. 1 spring 52, a limit seat 53 and a fixed seat 54;

[0047] The fixed part of the telescopic sleeve 51 is fixedly connected to the side end surface of the rotating plate 4, the telescopic part of the telescopic sleeve 51 is fixedly connected to a fixed seat 54, the side end surface of the fixed part of the telescopic sleeve 51 is slidably connected to a limiting seat 53, and a No. 1 spring 52 is arranged between the limiting seat 53 and the fixed seat 54.

[0048] In this embodiment, when the sheet metal part is bent, an oblique downward force is applied to the sheet metal part, so that the sheet metal part is easily displaced downward; before the bending process, the telescopic sleeve 51 is first started, and the telescopic sleeve 51 is extended and retracted. The telescopic sleeve 51 pushes the No. 1 spring 52 through the fixed seat 54, and the No. 1 spring 52 applies an elastic limiting force to the sheet metal part through the limiting seat 53, thereby avoiding downward displacement of the sheet metal part when the sheet metal part is bent.

[0049] like Figure 1 As shown, a sheet metal parts bending device provided by the present invention, the positioning assembly 6 includes a moving frame 61, a first electric rod 62 and a pressing plate 63;

[0050] The two ends of the movable frame 61 are respectively slidably connected to the two slide rails 11, and a No. 4 electric rod 12 is fixedly connected between each end of the movable frame 61 and the slide rail 11. A No. 1 electric rod 62 is fixedly provided in the middle of the movable frame 61, and a pressure plate 63 is fixedly connected to the telescopic end of the No. 1 electric rod 62, and the pressure plate 63 is opposite to the end surface of the positioning platform 2.

[0051] In this embodiment, the first electric rod 62 is started, and the first electric rod 62 drives the pressing plate 63 to press down, and the pressing plate 63 fixes the sheet metal part.

[0052] like Figure 5 and Figure 6 As shown, a sheet metal parts bending device provided by the present invention, the bending mechanism 8 includes a guide rail 81, a guide rod 82, a sliding seat 83, a pressure roller 84 and a second spring 85;

[0053] Guide rails 81 are provided on both sides of the rotating plate 4, and the guide rails 81 are fixedly connected with guide rods 82. The guide rods 82 are slidably connected with the fixed plate 13 and penetrated therethrough. A plurality of sliding seats 83 are slidably connected in the guide rails 81, and pressure rollers 84 are rotatably connected between the sliding seats 83 on both sides of the rotating plate 4, and a No. 2 spring 85 is connected between two adjacent sliding seats 83.

[0054] In this embodiment, multiple pressure rollers 84 limit the sheet metal parts in sections. On the one hand, when a single pressure roller 84 squeezes the sheet metal parts, the remaining parts of the sheet metal parts are prevented from tilting relative to the rotating plate 4, resulting in poor flatness of the bent portion of the sheet metal parts. On the other hand, when the sheet metal parts are bent, the bent portion of the sheet metal parts extends, causing the sheet metal parts to be displaced relative to the pressure roller 84. At this time, the pressure roller 84 can rotate under the friction force of the sheet metal parts, thereby avoiding wear on the surface of the sheet metal parts.

[0055] like Figure 6 As shown, a sheet metal part bending device provided by the present invention is provided, wherein a second electric rod 86 is connected between a sliding seat 83 on the outermost side of the rotating plate 4 and the side wall of the rotating plate 4 .

[0056] In this embodiment, when the bending of the sheet metal part is completed, the No. 2 electric rod 86 is started, and the No. 2 electric rod 86 pushes the sliding seat 83 connected to it to slide in the guide rail 81. All sliding seats 83 move synchronously driven by all No. 2 springs 85, so that all pressure rollers 84 roll toward one end of the sheet metal part, thereby increasing the flatness of the surface of the bent portion of the sheet metal part.

[0057] like Figure 5 , Figure 6 as well as Figure 7 As shown, a sheet metal part bending device provided by the present invention is provided. All sliding seats 83 in a guide rail 81 are provided with an inner cavity filled with lubricating oil, and the side walls on both sides opposite to each other of all sliding seats 83 are slidably and sealedly connected with sliding plugs 9, the second spring 85 is in contact with the sliding plug 9 on one side, and the telescopic part of the second electric rod 86 is in contact with the sliding plug 9 on one side of a sliding seat 83, and the sliding seats 83 are sealedly connected with a cover plate 14, and the cover plate 14 is provided with a one-way air intake valve 15;

[0058] The pressure roller 84 is connected with a plurality of liquid outlet holes 17 , and the pressure rollers 84 are all connected with the inner cavity of the sliding seat 83 on one side, and a one-way liquid outlet valve 16 is provided at one end of each pressure roller 84 for unidirectionally conducting toward the middle of the pressure roller 84 .

[0059] In this embodiment, when all the pressure rollers 84 roll toward one end of the sheet metal part, extrusion is generated between the raised part of the sheet metal part and the pressure roller 84. During this process, the pressure roller 84 drives the sliding seats 83 at both ends to respectively squeeze the No. 2 springs 85 connected to them. Under the elastic pressure of the No. 2 springs 85, all the No. 2 springs 85 squeeze the sliding plugs 9 on one side, and the sliding plugs 9 shrink toward the sliding seat 83 where they are located. At this time, the air pressure in the sliding seat 83 increases, and the one-way liquid outlet valve 16 on the pressure roller 84 is turned on. The lubricating oil in the sliding seat 83 enters the pressure roller 84, and the lubricating oil in the pressure roller 84 flows between the raised part of the sheet metal part and the pressure roller 84, thereby avoiding friction between the raised part of the sheet metal part and the pressure roller 84 to cause surface damage to the sheet metal part.

[0060] like Figure 5 As shown, a sheet metal part bending device provided by the present invention, the driving assembly 7 includes a No. 1 motor 71 and a threaded rod 72, the No. 1 motor 71 is fixedly connected to the fixed plate 13, the output shaft of the No. 1 motor 71 is fixedly connected to the threaded rod 72, and the threaded rod 72 is threadedly connected to the guide rail 81.

[0061] In this embodiment, the No. 1 motor 71 is started, the No. 1 motor 71 drives the threaded rod 72 to rotate, the threaded rod 72 drives the guide rail 81 to move vertically through thread transmission, and the guide rail 81 drives all the pressure rollers 84 to move vertically, thereby adjusting the distance between all the pressure rollers 84 and the sheet metal parts.

[0062] like Figure 5 As shown, a sheet metal part bending device provided by the present invention is provided, wherein a rubber plate 18 is fixedly connected between the sliding seats 83 on both sides of the rotating plate 4, and the rubber plate 18 is in contact with a pressure roller 84 on one side.

[0063] In this embodiment, during bending, the rubber sheet 18 can be used to block external dust from being adsorbed onto the contact surface between the pressure roller 84 and the sheet metal part; when all the pressure rollers 84 roll toward one end of the sheet metal part, the rubber sheet 18 cleans the surface of the sheet metal part under the drive of the sliding seat 83, and at the same time, the rubber sheet 18 can clean the surface of the rotating pressure roller 84 to prevent the pressure roller 84 from affecting the flatness of the sheet metal part and the surface integrity of the sheet metal part when rolling on the surface of the sheet metal part.

[0064] A sheet metal part bending method, applied to the sheet metal part bending device described in the above embodiment, comprises the following steps:

[0065] S1: placing the sheet metal part on the end surface of the positioning table 2, and extending one end of the sheet metal part between all the pressing rollers 84 and the rotating plate 4 to position the sheet metal part;

[0066] S2: Start the fourth electric rod 12 to extend and retract, thereby adjusting the fixing position of the positioning assembly 6 on the sheet metal part; then start the first electric rod 62, the first electric rod 62 drives the pressing plate 63 to press down, and the pressing plate 63 fixes the sheet metal part;

[0067] Start the No. 1 motor 71, the No. 1 motor 71 drives the threaded rod 72 to rotate, the threaded rod 72 drives the guide rail 81 to move vertically through the thread transmission, and the guide rail 81 drives all the pressing rollers 84 to move vertically, so as to adjust the distance between all the pressing rollers 84 and the sheet metal parts, so that the pressing rollers 84 fit the upper end surface of the bending part of the sheet metal parts;

[0068] S3: Start the telescopic sleeve 51, the telescopic sleeve 51 is extended and retracted, the telescopic sleeve 51 pushes the No. 1 spring 52 through the fixed seat 54, the No. 1 spring 52 applies an elastic limiting force to the sheet metal part through the limiting seat 53, so as to prevent the sheet metal part from deflecting downward under the action of pressure during bending, and the limiting seat 53 applies a reverse upward supporting force to the sheet metal part, thereby improving the processing accuracy of the sheet metal part;

[0069] Through the cooperation of the limit assembly 5, the positioning assembly 6, the driving assembly 7, the bending mechanism 8 and the fourth electric rod 12, the fixing part and the bending part of the sheet metal part are accurately positioned to avoid displacement of the sheet metal part during the bending process, thereby improving the processing accuracy of the sheet metal bending;

[0070] S4: Start the third electric rod 10 to contract, the third electric rod 10 drives the rotating plate 4 to rotate downward, and the rotating plate 4 presses the sheet metal parts downward through the pressing roller 84, so as to bend the sheet metal parts.

[0071] In this process, multiple pressing rollers 84 perform segmented positioning on the sheet metal parts. On the one hand, when a single pressing roller 84 squeezes the sheet metal parts, the remaining parts of the sheet metal parts are prevented from tilting relative to the rotating plate 4, resulting in poor flatness of the bending part of the sheet metal parts. On the other hand, when the sheet metal parts are bent, the bending part of the sheet metal parts extends, causing the sheet metal parts to be displaced relative to the pressing rollers 84. At this time, the pressing rollers 84 can rotate under the friction of the sheet metal parts, thereby avoiding wear on the surface of the sheet metal parts.

[0072] When the sheet metal part is bent, the second electric rod 86 is started, and the second electric rod 86 pushes the sliding seat 83 connected thereto to slide in the guide rail 81. All the sliding seats 83 move synchronously under the drive of all the second springs 85, so that all the pressure rollers 84 roll toward one end of the sheet metal part, thereby increasing the flatness of the surface of the bent portion of the sheet metal part.

[0073] When all the pressure rollers 84 roll toward one end of the sheet metal part, extrusion is generated between the raised part of the sheet metal part and the pressure roller 84. During this process, the pressure roller 84 drives the sliding seats 83 at both ends to respectively squeeze the No. 2 springs 85 connected thereto. Under the elastic pressure of the No. 2 springs 85, all the No. 2 springs 85 squeeze the sliding plugs 9 on one side thereof, and the sliding plugs 9 shrink toward the sliding seat 83 where they are located. At this time, the air pressure in the sliding seat 83 increases, the one-way liquid outlet valve 16 is turned on, and the lubricating oil in the sliding seat 83 enters the pressure roller 84. The lubricating oil in the pressure roller 84 flows between the raised part of the sheet metal part and the pressure roller 84, thereby avoiding friction between the raised part of the sheet metal part and the pressure roller 84 to cause surface damage to the sheet metal part.

[0074] During bending, the rubber sheet 18 can be used to block external dust from being adsorbed onto the contact surface between the pressure roller 84 and the sheet metal part. When all the pressure rollers 84 roll toward one end of the sheet metal part, the rubber sheet 18 cleans the surface of the sheet metal part under the drive of the sliding seat 83. At the same time, the rubber sheet 18 can clean the surface of the rotating pressure roller 84 to prevent the pressure roller 84 from affecting the flatness and surface integrity of the sheet metal part when rolling on the surface of the sheet metal part.

[0075] 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 and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0076] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A sheet metal parts bending device, comprising a support base (1), wherein the support base (1) is fixedly connected to a positioning platform (2), characterized in that: The positioning platform (2) is rotatably connected to a limiting roller (3) and a rotating plate (4); a retractable No. 3 electric rod (10) is rotatably connected between the rotating plate (4) and the support seat (1); the rotating plate (4) is fixedly connected to a limiting assembly (5); the limiting assembly (5) is used to elastically limit the sheet metal parts during the bending process; both sides of the positioning platform (2) are fixedly connected to slide rails (11); a positioning assembly (6) is slidably connected to the two slide rails (11); a retractable No. 4 electric rod (12) is fixedly connected between the positioning assembly (6) and the slide rail (11); the positioning assembly (6) is used to fix the sheet metal parts; The rotating plate (4) is slidably connected to a bending mechanism (8), and the rotating plate (4) is fixedly connected to a fixed plate (13). A driving component (7) is provided between the fixed plate (13) and the bending mechanism (8). The driving component (7) is used to drive the bending mechanism (8) to move vertically upward and downward. The bending mechanism (8) can limit the position of the sheet metal parts. The bending mechanism (8) comprises a guide rail (81), a guide rod (82), a sliding seat (83), a pressure roller (84) and a No. 2 spring (85); the guide rails (81) are arranged on both sides of the rotating plate (4); the guide rails (81) are fixedly connected to the guide rods (82); the guide rods (82) are slidably connected to and penetrate the fixed plate (13); a plurality of sliding seats (83) are slidably connected in the guide rails (81); the sliding seats (83) on both sides of the rotating plate (4) are rotatably connected to the pressure rollers (84); and the No. 2 spring (85) is connected between two adjacent sliding seats (83).

2. The sheet metal parts bending device according to claim 1, characterized in that: The limiting assembly (5) comprises a telescopic sleeve (51), a No. 1 spring (52), a limiting seat (53) and a fixing seat (54); The fixed portion of the telescopic sleeve (51) is fixedly connected to the side end surface of the rotating plate (4); the telescopic portion of the telescopic sleeve (51) is fixedly connected to a fixed seat (54); the side end surface of the fixed portion of the telescopic sleeve (51) is slidably connected to a limit seat (53); and a first spring (52) is provided between the limit seat (53) and the fixed seat (54).

3. The sheet metal part bending device according to claim 1, characterized in that: The positioning assembly (6) comprises a moving frame (61), a No. 1 electric rod (62) and a pressing plate (63); The two ends of the movable frame (61) are respectively slidably connected to the two slide rails (11); a fourth electric rod (12) is fixedly connected between each end of the movable frame (61) and the slide rail (11); a first electric rod (62) is fixedly arranged in the middle of the movable frame (61); a pressing plate (63) is fixedly connected to the telescopic end of the first electric rod (62); the pressing plate (63) faces the end surface of the positioning platform (2).

4. The sheet metal parts bending device according to claim 1, characterized in that: A second electric rod (86) is connected between a sliding seat (83) on the outermost side of the rotating plate (4) and a side wall of the rotating plate (4).

5. The sheet metal parts bending device according to claim 4, characterized in that: All the sliding seats (83) in a guide rail (81) are provided with an inner cavity filled with lubricating oil, and the side walls on both sides opposite to each other of all the sliding seats (83) are slidably and sealingly connected with sliding plugs (9), the second spring (85) is in contact with the sliding plug (9) on one side, and the telescopic portion of the second electric rod (86) is in contact with the sliding plug (9) on one side of a sliding seat (83), and the sliding seats (83) are sealingly connected with a cover plate (14), and a one-way air intake valve (15) is provided on the cover plate (14); The pressure roller (84) is connected to a plurality of liquid outlet holes (17), the pressure rollers (84) are all connected to the inner cavity of a sliding seat (83) on one side, and one end of each pressure roller (84) is provided with a one-way liquid outlet valve (16) that is unidirectionally connected to the middle of the pressure roller (84).

6. The sheet metal part bending device according to claim 1, characterized in that: The driving assembly (7) comprises a No. 1 motor (71) and a threaded rod (72); the No. 1 motor (71) is fixedly connected to a fixing plate (13); an output shaft of the No. 1 motor (71) is fixedly connected to the threaded rod (72); and the threaded rod (72) is threadedly connected to a guide rail (81).

7. The sheet metal part bending device according to claim 1, characterized in that: A rubber plate (18) is fixedly connected between the sliding seats (83) on both sides of the rotating plate (4), and the rubber plate (18) is in contact with a pressure roller (84) on one side.

8. A sheet metal parts bending method, applied to the sheet metal parts bending device according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1: placing a sheet metal part on the end surface of the positioning table (2), and extending one end of the sheet metal part between the bending mechanism (8) and the rotating plate (4) to position the sheet metal part; S2: starting the fourth electric rod (12) to adjust the fixing position of the positioning component (6) on the sheet metal part; then starting the positioning component (6) to fix the fixing portion of the sheet metal part; starting the driving component (7) to drive the bending mechanism (8) to move vertically downward, so that the bending mechanism (8) is in contact with the upper end surface of the bending portion of the sheet metal part; S3: starting the limit assembly (5), the limit assembly (5) elastically abutting against the sheet metal part, thereby preventing the sheet metal part from deflecting downward under the action of pressure during bending, and applying a reverse upward supporting force to the sheet metal part through the limit assembly (5), thereby improving the processing accuracy of the sheet metal part; S4: The third electric rod (10) is started to retract, and the third electric rod (10) drives the rotating plate (4) to rotate downward, and the rotating plate (4) presses the sheet metal part downward through the bending mechanism (8), thereby bending the sheet metal part.

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